Francisco Hernandez Jimenez v. Astol Calero Toledo, 604 F.2d 99 (1st Cir. 1979). · Go Syfert
Francisco Hernandez Jimenez v. Astol Calero Toledo, 604 F.2d 99 (1st Cir. 1979). Cases Citing This Book View Copy Cite
“appellees could very well have believed that they were not named as parties in the original action for tactical reasons or because appellant lacked evidence of their alleged participation in the conspiracy when he filed the complaint”
161 citation events (48 in the last 25 years) across 49 distinct courts.
Strongest positive: Lundy v. Adamar of New Jersey, Inc. (ca3, 1994-07-05) · Strongest negative: Carol Anita Ringrose and Frederick Ringrose v. Engelberg Huller Co., Inc., Sundstrand Corporation and White Consolidated, Inc. (ca6, 1982-11-02)
Treatment trajectory · 1979 → 2026 · click a year to view as-of
1979 2002 2026
Top citers, strongest first. 50 distinct citers.
discussed Cited "but see" Carol Anita Ringrose and Frederick Ringrose v. Engelberg Huller Co., Inc., Sundstrand Corporation and White Consolidated, Inc. (2×)
6th Cir. · 1982 · signal: but cf. · confidence high
Cf. Staren v. American National Bank and Trust Co. of Chicago, 529 F.2d 1257, 1263 (7th Cir. 1976) (identity of interest may supply notice and allow relation back); but cf. Hernandez Jiminez v. Calero Toledo, 604 F.2d 99, 102-03 (1st Cir. 1979) (in some circumstances identity of interest supplies notice, not reason to know of mistake).
examined Cited as authority (verbatim quote) Lundy v. Adamar of New Jersey, Inc. (2×) also: Cited as authority (rule)
3rd Cir. · 1994 · quote attribution · 1 verbatim quote · confidence high
appellees could very well have believed that they were not named as parties in the original action for tactical reasons or because appellant lacked evidence of their alleged participation in the conspiracy when he filed the complaint
discussed Cited as authority (quoted) Valentine v. George Washington University
D.D.C. · 2025 · quote attribution · 1 verbatim quote · confidence low
the identity in interest principle is often applied where the original and added parties are a parent corporation and a wholly owned subsidiary
discussed Cited as authority (rule) Kitzman
D. Maryland · 2025 · confidence medium
As relevant here, constructive notice may be established through the “identity of interest principle,” which “provides that added parties are deemed to have received constructive notice where the original and added parties are ‘so closely related in business or other activities that it is fair to presume the added parties learned of the institution of the action shortly after it was commenced.’” Benn, 304 F. Supp. 2d at 725 (quoting Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 102-103 (1st Cir. 1979)).
discussed Cited as authority (rule) Johnson v. Pleasant Gardens Corporation
D. Maryland · 2025 · confidence medium
As relevant here, constructive notice may be established through the “identity of interest principle,” which “provides that added parties are deemed to have received constructive notice where the original and added parties are ‘so closely related in business or other activities that it is fair to presume the added parties learned of the institution of the action shortly after it was commenced.’” Benn, 304 F. Supp. 2d at 725 (quoting Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 102-103 (1st Cir. 1979)).
discussed Cited as authority (rule) Securities Investor Protection Corporation v. Bernard L. Madoff Investment Securities, LLC. et a
Bankr. S.D.N.Y. · 2023 · confidence medium
This principle has been applied when the parties are “a parent corporation and its wholly owned subsidiary, two related corporations whose officers, directors, or shareholders are substantially identical and who have similar names or share office space . . . .” Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 102-03 (1st Cir. 1979).
discussed Cited as authority (rule) Irving H. Picard, Trustee for the Liquidation of B v. Naidot & Co.
Bankr. S.D.N.Y. · 2023 · confidence medium
This principle has been applied when the parties are “a parent corporation and its wholly owned subsidiary, two related corporations whose officers, directors, or shareholders are substantially identical and who have similar names or share office space . . . .” Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 102-03 (1st Cir. 1979).
discussed Cited as authority (rule) BURNETT v. OCEAN PROPERTIES LTD
D. Me. · 2019 · confidence medium
Mr. Burnett also contends that the theory of constructive notice applies “when the original and added parties are so closely related in business or other activities that it is fair to presume the added parties learned of the institution of the action shortly after it was commenced.” Id. (quoting Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 102-103 (1st Cir. 1979)).
discussed Cited as authority (rule) Chomo v. Full Spectrum Lending, Inc.
D. Mass. · 2019 · confidence medium
Equitable tolling under the doctrine of fraudulent concealment requires that “[t]he defendant raising the limitations defense must have engaged in fraud or deliberate concealment of material facts relating to his wrongdoing and the plaintiff must have failed to discover these facts within the normal limitations period despite his exercise of due diligence.” Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 101 (1st Cir. 1979) (citations omitted).
cited Cited as authority (rule) Bayatfshar v. Aeronautical Radio, Inc.
D.D.C. · 2013 · confidence medium
Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 102-03 (1st Cir.1979) (citing 6 Wright & Miller, § 1499 at 518-19; 3 J.
cited Cited as authority (rule) McWilliams v. Board of County Commissioners
Okla. · 2011 · confidence medium
Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 102 (1st Cir.1979) .
discussed Cited as authority (rule) Ex Parte Novus Utilities, Inc., 1101127 (Ala. 12-2-2011)
Ala. · 2011 · confidence medium
Many of these cases involve substituting or adding related corporations....”’”); see also Goodman v. Praxair, Inc., 494 F.3d 458, 475 (4th Cir.2007) (observing identity of interest between a parent and a wholly owned subsidiary corporation such that “when a plaintiff alleges a comprehensible claim against one of a group of closely related and functioning business entities or corporations, the other entities in that group, barring a contrary showing, will be charged with knowledge under Rule 15(c)(3)(B) of the entity properly answerable to the claim”); Hernandez Jimenez v. Calero Tole…
cited Cited as authority (rule) Lavarato v. Branney
Colo. Ct. App. · 2009 · confidence medium
Seq, eg., Rendall-Speranza, 107 F.3d at 918 ; Lundy, 34 F.3d at 1183 ; Lovelace v. O'Hara, 985 F.2d 847 , 850-51 (6th Cir.1993); Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 103 (1st Cir.1979).
discussed Cited as authority (rule) Schomaker v. USA et al.
D.N.H. · 2008 · confidence medium
See Vistamar, 430 F.3d at 72 (holding that where defendants merely failed to inform plaintiff of certain relevant records, there was no basis for concluding that they wrongfully concealed those records from plaintiff); Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 102 (1st Cir. 1979) (holding that there was no fraudulent concealment of an alleged political conspiracy to fire plaintiff from his job where nobody made misrepresentations to plaintiff that would "throw [him] off the trail" of the alleged conspiracy).
cited Cited as authority (rule) Figueroa v. J.C. Penney Puerto Rico, Inc.
D.P.R. · 2007 · confidence medium
Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 103 (1st Cir.1979).
cited Cited as authority (rule) Markhorst v. Ridgid, Inc.
E.D. Pa. · 2007 · confidence medium
Sorrels v. Sears, Roebuck & Co., 84 F.R.D. 663, 667 (D.Del.1979) (citing Jimenez v. Toledo, 604 F.2d 99, 102 (1st Cir.1979)).
discussed Cited as authority (rule) Porter County Sheriff Department v. Guzorek (2×)
Ind. · 2006 · confidence medium
An identity of interest may permit notice to be imputed to the added party when the original and added party "are so closely related in business or other activities that it is fair to presume that the added part[y] learned of the institution of the action shortly after it was commenced." Honda Motor Co., 485 N.E.2d at 650 (quoting Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 102-03 (1 st Cir.1979)).
cited Cited as authority (rule) Gulf Coast Bank & Trust Co. v. Mendel (In Re Mendel)
Bankr. S.D. Tex. · 2006 · confidence medium
Cir.1994) (citing Lovelace v. O’Hara, 985 F.2d 847 (6th Cir.1993); Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 103 (1st Cir.1979)); Great Ne.
discussed Cited as authority (rule) Callahan v. United States
1st Cir. · 2005 · confidence medium
In order for a plaintiff to prevail on a fraudulent concealment claim, the defendant “ ‘must have engaged in fraud or deliberate concealment of material facts relating to his wrongdoing and the plaintiff must have failed to discover these facts within the normal limitations period despite his exercise of due diligence.’ ” Torres Ramírez v. Bermudez Garcia, 898 F.2d 224, 229 (1st Cir.1990) (quoting Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 101 (1st Cir.1979)).
discussed Cited as authority (rule) Cholopy v. City of Providence
D.R.I. · 2005 · confidence medium
Finally, a court may find constructive notice sufficient for purposes of the relation-back doctrine if the original and newly named defendants share an “identity of interests.” Id., at 130 (citing Ayala Serrano, 909 F.2d at 12 (citing Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 102 (1st Cir.1979)); Velez, 145 F.Supp.2d at 154 ; Bowden v. Wal-Mart Stores, Inc., 124 F.Supp.2d 1228, 1241-42 (M.D.Ala.2000); Ayala Serrano, 650 F.Supp. at 726 ).
discussed Cited as authority (rule) Phillips v. Gieringer
Alaska · 2005 · signal: cf. · confidence medium
Reynolds Indus., Inc., 82 F.R.D. 157, 161 (M.D.N.C.1979); see also Johnson v. Goldstein, 850 F.Supp. 327, 330 (E.D.Pa.1994); cf. Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 103 (1st Cir.1979) ("The identity of interests concept, however, bears only on the requirement of Rule 15(c)(1) that the added party 'received such notice of the institution of the action’ before the limitations period expired."). 33 .
discussed Cited as authority (rule) Lacedra v. Donald W. Wyatt Detention Facility
D.R.I. · 2004 · confidence medium
Ayala Serrano, 909 F.2d at 12 (citing Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 102 (1st Cir.1979)); Velez , 145 F.Supp.2d at 154 ; Bowden v. Wal-Mart Stores, Inc., 124 F.Supp.2d 1228, 1241-42 (M.D.Ala.2000); Ayala Serrano, 650 F.Supp. at 726 .
discussed Cited as authority (rule) Benn v. Seventh-Day Adventist Church (2×)
D. Maryland · 2004 · confidence medium
This principle provides that added parties are deemed to have received constructive notice where the original and added parties are “so closely related in business or other activities that it is fair to presume the added parties learned of the institution of the action shortly after it was commenced.” Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 102-03 (1st Cir.1979).
cited Cited as authority (rule) Cape Ann Investors v. Lepone
1st Cir. · 2002 · confidence medium
Hernandez Jimenez v. Calero Toledo, 604 F.2d 99,103 (1st Cir.1979).
discussed Cited as authority (rule) Official Committee of the Unsecured Creditors of Color Tile, Inc. v. Pilgrim High Yield Trust (In re Color Tile, Inc.)
D. Del. · 2002 · confidence medium
Courts have applied the identity of interest principles “where the original and added parties are a parent corporation and its wholly owned subsidiary, two related corporations whose officers, directors, or shareholders are substantially identical and who have similar names or share office space, past and present forms of the same enterprise, or co-executors of an estate.” Jimenez v. Toledo, 604 F.2d 99, 102 (1st Cir.1979).
cited Cited as authority (rule) Jeri Vincent v. CNA Insurance
Tenn. Ct. App. · 2002 · confidence medium
Wilson v. United States, 23 F.3d 559, 563 (1st Cir. 1994) (quoting Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 102-03 (1st Cir. 1979)); Serrano, 909 F.2d at 12 .
discussed Cited as authority (rule) Newcare Health Corp. Ex Rel. Brandt v. Midway Health Care Center ( in Re Newcare Health Corp.)
Bankr. D. Mass. · 2002 · confidence medium
Under the “identity of interest” test, if the original defendant and the added party are “closely related in business or other activities ... it is fair to presume the added parties learned of the institution of the action shortly after it was commenced.” Ayala Serrano, 909 F.2d at 12 (citing Hernandez Jimenez v. Calero Toledo, 604 F.2d 99,102 (1st Cir.1979)).
cited Cited as authority (rule) Sigros v. Walt Disney World, Co.
D. Mass. · 2002 · confidence medium
Jimenez v. Toledo, 604 F.2d 99, 100 (1st Cir.1979).
cited Cited as authority (rule) Emery v. Wood
D.N.H. · 2001 · confidence medium
See generally Schiavone v. Fortune, a/k/a Time, Inc., 477 U.S. 21, 28 (1986); Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 102-03 (1st Cir. 1979).
cited Cited as authority (rule) Pagan Velez v. Laboy Alvarado
D.P.R. · 2001 · confidence medium
Hernández Jiménez v. Calero Toledo, 604 F.2d 99, 102-03 (1st Cir.1979); see also Ayala Semno, 909 F.2d at 12-13 (following Hernandez Jiménez).
discussed Cited as authority (rule) Leonard v. Parry
D.N.H. · 1999 · confidence medium
See, e.g., Lundy v. Adamar of New Jersey, Inc., 34 F.3d 1173, 1183 (3rd Cir. 1994); Keller v. Prince George's County, 923 F.2d 30, 34 (4th Cir. 1991); Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 103 (1st Cir. 1979). 6 Additionally, Parry asserts that Leonard had actual notice, before the statute of limitations had lapsed, that he had sued the "wrong" party.
cited Cited as authority (rule) ca3 1999
3rd Cir. · 1999 · confidence medium
Jacobsen v. Osborne, 133 F.3d 315, 320 (5th Cir.1998); Fromson, 886 F.2d at 1304 ; Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 102-03 (1st Cir.1979).
cited Cited as authority (rule) Ohio Cellular Products Corp. v. Adams USA, Inc.
Fed. Cir. · 1999 · confidence medium
Jacobsen v. Osborne, 133 F.3d 315, 320 (5th Cir.1998); Fromson, 886 F.2d at 1304 ; Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 102-03 (1st Cir.1979).
discussed Cited as authority (rule) Pineda v. Almacenes Pitusa, Inc.
D.P.R. · 1997 · confidence medium
Relying on Hernández Jiménez v. Calero Toledo, 604 F.2d 99, 102-03 (1st Cir.1979), plaintiffs argue that Empresas Koppel d/b/a Almacenes Pitusa and Almacenes Pitusa, Inc., are so closely related that notice to the former constitutes notice to the latter.
discussed Cited as authority (rule) Wine v. Emsa Ltd. Partnership
E.D. Pa. · 1996 · confidence medium
Notice may be imputed to proposed new parties sought to be added after the limitations period has expired “ “when the original and added parties are so closely related in business or other activities that it is fair to presume the added parties learned of the institution of the action shortly after it was commenced.’” Advanced Power Systems, Inc. v. Hi-Tech Systems, Inc., 801 F.Supp. 1450, 1456 (E.D.Pa.1992) (quoting Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 101-02 (1st Cir.1979)).
discussed Cited as authority (rule) Sendobry v. Michael
M.D. Penn. · 1995 · confidence medium
In Kinnally v. Bell of Pennsylvania, 748 F.Supp. 1136, 1141 (E.D.Pa.1990), the court noted that “a growing number of courts and commentators [have concluded] ... that sufficient notice may be deemed to have occurred where a party who has some reason to expect his potential involvement as a defendant hears of the commencement of the litigation through some informal means.” In Advanced Power Systems, Inc. v. Hi-Tech Systems, Inc., 801 F.Supp. 1450, 1456 (E.D.Pa.1992), the court, quoting Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 101-02 (1st Cir.1979), found that “notice may be impute…
discussed Cited as authority (rule) ca3 1994
3rd Cir. · 1994 · confidence medium
See, e.g., Lovelace v. O'Hara, 985 F.2d 847 (6th Cir.1993) (complaint alleges theory of liability against public officer in official capacity; no basis for believing claim against official in individual capacity intended); Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 103 (1st Cir.1979) ("appellees could very well have believed that they were not named as parties in the original action for tactical reasons or because appellant lacked evidence of their alleged participation in the conspiracy when he filed the complaint"); Great Northeastern Lumber & Millwork Corp. v. Pepsi-Cola Metropolitan …
cited Cited as authority (rule) Wilson v. United States Government
1st Cir. · 1994 · confidence medium
In addition, Wilson cites the "identity-of-interest” gloss on Rule 15(c) which we endorsed in Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 102-03 (1st Cir.1979).
cited Cited as authority (rule) Wilson v. U.S. Government
1st Cir. · 1994 · confidence medium
In addition, Wilson cites the "identity-of-interest" gloss on Rule 15(c) which we endorsed in Hernandez Jimenez v. _________________ Calero Toledo, 604 F.2d 99, 102-03 (1st Cir. 1979).
cited Cited as authority (rule) Quality Inns International, Inc. v. Tampa Motel Associates, Ltd.
M.D. Fla. · 1994 · confidence medium
Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 102-03 (1st Cir.1979).
discussed Cited as authority (rule) Jones v. Wysinger
N.D. Ill. · 1993 · confidence medium
The identity of interest principle is usually applied if “‘the original and added parties are a parent corporation and its wholly owned subsidiary, two related corporations whose officers, directors, or shareholders are substantially identical and who have similar names or share office space, past and present forms of the same enterprise, or co-executors of an estate.’” Norton v. International Harvester Co., 627 F.2d 18, 21 (7th Cir.1980) (quoting Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 102-03 (1st Cir.1979)).
discussed Cited as authority (rule) In Re Integrated Resources Real Estate Ltd. Partnerships Securities Litigation
S.D.N.Y. · 1993 · confidence medium
The classic definition of the identity of interest exception is in Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 102-03 (1st Cir.1979): The identity of interests concept, a judicial gloss on Rule 15(c)(1), provides that the institution of the action serves as constructive notice of the action to the parties added after the limitations period expired, when the original and added parties are so closely related in business of other activities that it is fair to presume the added parties learned of the institution of the actions shortly after it was commenced____ The identity of interest princi…
discussed Cited as authority (rule) Ocasio Ortiz v. Betancourt Lebron (2×) also: Cited "see, e.g."
D.P.R. · 1992 · confidence medium
“The identity of interests concept, a judicial gloss on Rule 15(c)(1), provides that the institution of the action serves as constructive notice of the action to the parties added after the limitations period expired, when the original and added parties are so closely related in business or other activities that it is fair to presume the added parties learned of the institution of the action shortly after it was commenced.” Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 103 (1st Cir.1979).
discussed Cited as authority (rule) Advanced Power Systems, Inc. v. Hi-Tech Systems, Inc.
E.D. Pa. · 1992 · confidence medium
First, notice may be imputed to parties added after the limitations period expired “when the original and added parties are so closely related in business or other activities that it is fair to presume the added parties learned of the institution of the action shortly after it was commenced.” Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 101-02 (1st Cir.1979).
discussed Cited as authority (rule) Campbell v. Ward
E.D. Mo. · 1992 · confidence medium
The requisite "identity of interest" is established where "the original and the added parties are so closely related in business or other activities that it is fair to presume the added parties learned of the institution of the action shortly after it was commenced." Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 102-03 (1st Cir.1979).
discussed Cited as authority (rule) Great Northeastern Lumber & Millwork Corp. v. Pepsi-Cola Metropolitan Bottling Co.
E.D. Pa. · 1992 · confidence medium
In this case, as in Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 103 (1st Cir.1979), the proposed defendant, GE, “could very well have believed that [it] was not named ... for tactical reasons ...” Hence, like Judge O’Neill of this Court in Kemper v. URECO, 1991 WL 125178 , 1991 U.S.Dist.
cited Cited as authority (rule) Hensley v. Soo-Line Railroad
N.D. Ill. · 1991 · confidence medium
Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 102-03 (1st Cir.1979) (cited by Norton, 627 F.2d at 21 ; Garcia, 717 F.Supp. at 1326 ).
discussed Cited as authority (rule) Hood v. City of New York
S.D.N.Y. · 1990 · confidence medium
Cruz and McMickens assert that they “could very well have believed that they were not named as parties in the original complaint for tactical reasons or because [plaintiff] lacked evidence of [wrongdoing on their part].” See Jiminez v. Toledo, 604 F.2d 99, 103 (1st Cir.1979).
discussed Cited as authority (rule) John E. Rys, Jr. v. U.S. Postal Service
1st Cir. · 1989 · confidence medium
Had Rys served the individual defendants within the 30-day period, he might also have argued that their knowledge of his claim could be imputed to the Postmaster General because they all share an “identity of interest.” 7 See Schiavone, 477 U.S. at 29 , 106 S.Ct. at 2384 (discussing identity of interest exception to Rule 15(c)); Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 102-03 (1st Cir.1979) (same); Carver v. Casey, 669 F.Supp. 412, 415-16 (S.D.Fla.1987) (same).
discussed Cited as authority (rule) Garcia v. Peter Carlton Enterprises, Ltd. (2×) also: Cited "see"
N.D. Ill. · 1989 · confidence medium
This principle, however, is often applied when “ ‘the original and added parties are a parent corporation and its wholly owned subsidiary, two related corporation whose officers, directors, or shareholders are substantially identical and who have similar names or sharer office space, past and present forms of the same enterprise, or co-executors of an estate.’ ” Norton v. International Harvester Co., 627 F.2d 18, 21 (7th Cir.1980) (quoting Hernandez Jimenez v. Calero Toledo, 604 F.2d 99, 102-03 (1st Cir.1979)).
Francisco HERNANDEZ JIMENEZ, Plaintiff, Appellant,
v.
Astol CALERO TOLEDO Et Al., Defendants, Appellees
78-1478.
Court of Appeals for the First Circuit.
Jul 27, 1979.
604 F.2d 99
Jesus Hernandez Sanchez, San Juan, P. R., on brief for plaintiff, appellant., Hector A. Colon Cruz, Sol. Gen., and Rei-na Colon De Rodriguez, Asst. Sol. Gen., San Juan, P. R., were on brief, for defendants, appellees.
Coffin, Campbell, Bownes.
Cited by 122 opinions  |  Published
1 passage pin-cited by 1 case
Pinpoint authority: bottom 77%
Citer courts: District of Columbia (1)
COFFIN, Chief Judge.

At issue is whether the district court erred in finding that neither the federal doctrine of fraudulent concealment nor the rule governing relation back of amended pleadings, Fed.R.Civ.P. 15(c), saves appellant’s claims against appellees from being time-barred.

Believing that he had been discharged for political reasons, appellant sued his supervisor and the members of the reviewing commission which upheld the supervisor’s decision for violating his civil rights under 42 U.S.C. §§ 1983 and 1985. Appellees, two local politicians, were subsequently added as defendants by an amendment to the complaint alleging that they too had participated in the conspiracy to deprive appellant of his position as a lieutenant in the Puerto Rico police. The relief sought is reinstatement, back pay, compensatory and punitive damages.

After some documentary evidence had been submitted but before trial, the district court dismissed the action. The court ruled that the claims against the original defendants were barred by res judicata, an appeal from the discharge having been dismissed by the Superior Court as untimely, while those against the new defendants were time-barred because the amended complaint had not been filed until after the applicable limitations period had expired. We reviewed these rulings in an earlier appeal where we found that, as to the claims against the original defendants, res judicata was inapplicable but the statute of limitations barred those which arose from appellant’s dismissal. The remaining original claims, those stemming from the commission’s affirmance of the discharge, were timely, however, and we ruled that the action should proceed as to them. As to the claims against the new defendants, we stated that “it is open to plaintiff to prove if he can [on remand] that these parties fraudulently concealed from plaintiff their participation in the alleged conspiracy to affirm his dismissal” or that “the amended complaint ‘relates back’ to the original complaint [pursuant to Rule 15(c), Fed.R.Civ.P.] so as to place the added defendants in the same position as the others for statute of limitations purposes.” Hernandez Jimenez v. Calero Toledo, 576 F.2d 402, 404—05 & n. 3 (1st Cir. 1978) (see this opinion for a more detailed accounting of the facts than is presented here).

[*101] On remand, with regard to the claims against the new defendants, the district court instructed the parties to file memo-randa, “together with any competent proof, in connection with the question of the date when the statute of limitations began to run as to [appellees].” Appellant complied by submitting, along with a memorandum, two affidavits, one from himself and the other from a friend and member of the police, Alejandro Gonzalez Gonzalez. Ap-pellees submitted three affidavits, not from themselves but from the members of the reviewing commission, along with their memorandum. On the issue of fraudulent concealment, appellant argued below that the applicable limitations period was one year and that, since he had filed his amended complaint within one year of discovering appellees’ participation in the conspiracy to affirm his dismissal, his claims against the appellees were timely. On the relation back issue, appellant’s argument below is unclear.

On the fraudulent concealment issue the district court first noted, correctly, that the relevant statute of limitations was the one year period pursuant to 31 L.P.R.A. 5298, Rameriz de Arellano v. Alvarez de Choudens, 575 F.2d 315 (1st Cir. 1978), and that in a continuing conspiracy to violate civil rights, the statute ordinarily runs from the occurrence of each action, Hernandez Jimenez v. Calero Toledo, supra, 576 F.2d at 404, citing Kadar Corp. v. Milbury, 549 F.2d 230, 234 (1st Cir. 1977). The court went on to hold that appellant failed to establish a case under the federal doctrine of fraudulent concealment because appellant’s affidavits were devoid of any indication that appellees concealed their alleged participation in the conspiracy. With respect to the Rule 15(c) issue, the court ruled, inter alia, that the amended complaint did not relate back to the original because appellees had not received notice of the action during the limitations period as is required by Rule 15(c)(1). The court entered judgment for appellees pursuant to Rule 54(b), Fed.R. Civ.P., and this timely appeal, challenging these rulings, followed. [1]

Appellant gives the following three reasons in support of his contention that the district court erred in finding the doctrine of fraudulent concealment inapplicable to appellant’s claims against appellees. There is no doubt, according to appellant, that appellees concealed their participation in the conspiracy from him, that appellees knew all along about the commission’s af-firmance thereof, and that appellant was ignorant of his causes of action against appellees until less than one year from when he filed his amended complaint.

The federal doctrine of fraudulent concealment delays the commencement of a limitations period until plaintiff discovers the existence of his cause of action if certain conditions are met. The defendant raising the limitations defense must have engaged in fraud or deliberate concealment of material facts relating to his wrongdoing and the plaintiff must have failed to discover these facts within the normal limitations period despite his exercise of due diligence. Briley v. California, 564 F.2d 849, 855 (9th Cir. 1977); Fitzgerald v. Seamans, 180 U.S.App.D.C. 75, 83, 553 F.2d 220, 228 (1977). In appellant’s affidavit, he states that at some time after his discharge, April 17, 1973, but before the filing of the com[*102] plaint, April 10, 1975, his former supervisor Astol Calero, told appellant that he could not help him gain reinstatement because of pressures exerted by fellow political party members. At some unidentified time subsequent to filing the complaint, appellant avers that he started an investigation and discovered “that the Mayor of Rincon [Amaes] used his position as Mayor and member of the Popular Democratic Party against me and requested from Mr. Calero my dismissal . . . .” We are informed by appellant’s brief that this discovery of Amaes’ participation in the conspiracy came “by a stroke of luck”, i. e., as the affidavit of one Gonzalez relates, by Gonzalez overhearing a conversation of Amaes at a place of business fronting the townsquare of Rin-con on a patron Saint’s day, toward the end of August, 1975.

On these facts we can find no suggestion that any efforts were made to hide the conspiracy. Indeed, the circumstances surrounding Amaes’ overheard statements suggest the opposite of concealment. Nor were there any alleged misrepresentations which could throw appellant off the trail of any inquiry. And, if such may be relevant, cf. Fitzgerald v. Seamans, supra, 180 U.S. App.D.C. at 83, 553 F.2d at 228, there was no suggestion that either a fiduciary relationship or reliance upon an expert was a factor in this case.

We have difficulty also in finding any evidence in the record that appellant exercised due diligence. Although told by his former supervisor that he was subject to political pressures, appellant apparently did nothing for months, until Gonzalez told him about the overheard conversation. Moreover, there are no factual allegations which could lead one to conclude that investiga-five efforts would be futile. While the district court did not rely on this ground, we hold that the complete absence of factual allegations indicating either the exercise of due diligence or the futility of such efforts constitutes a separate and independent ground supporting the judgment below. [2]

Federal Rule of Civil Procedure 15(c) permits an amendment adding a party to relate back to the date of the original pleading if three conditions are met: (1) the claims against the new party arise out of the same occurrence as the claims in the original pleading, (2) the new party received “notice of the institution of the action” before the limitations period expired, and (3) the new party “knew or should have known that, but for a mistake concerning the identity of the proper party, the action would have been brought against him.” 6 Wright & Miller, Federal Practice & Procedure § 1498 at 507 (1971). In the present case the district court ruled that the amended complaint did not relate back because, inter alia, appellant’s affidavits failed to indicate that appellees had received notice of the institution of the present action prior to the expiration of the limitations period. See Fed.R.Civ.P. 15(c)(1). Appellant challenges this ruling on the ground that notice to the original defendants served also as notice to appellees because of the identity of interests between these two groups, as members of the same political party. The identity of interests concept, a judicial gloss on Rule 15(c)(1), provides that the institution of the action serves as constructive notice of the action to the parties added after the limitations period expired, when the original and added parties are so closely[*103] related in business or other activities that it is fair to presume the added parties learned of the institution of the action shortly after it was commenced. 6 Wright & Miller, supra, § 1499 at 516-17. The identity of interest principle is often applied where the original and added parties are a parent corporation and its wholly owned subsidiary, two related corporations whose officers, directors, or shareholders are substantially identical and who have similar names or share office space, past and present forms of the same enterprise, or co-executors of an estate. 6 Wright & Miller, supra, § 1499 at 518-19; 3 Moore’s Federal Practice, 115.15[4.-2] at 15-231 n. 15 (2d ed. 1978).

The identity of interests concept, however, bears only on the requirement of Rule 15(c)(1) that the added party “received such notice of the institution of the action” before the limitations period expired. Therefore, even when this concept applies, an amended pleading will not relate back unless the other two requirements of Rule 15(c) are met. 6 Wright & Miller, supra § 1498 at 516 — 17. Here, assuming arguen-do that appellees, a mayor and a local political party leader, have the required identity of interests with the original defendants, the amended complaint would still not relate back because there is no evidence in the record that appellees “knew or should have known that, but for a mistake concerning the identity of the proper party, the action would have been brought against [them].” See Fed.R.Civ.P. 15(c)(2); 6 Wright & Miller, supra, § 1498 at 515. Based on the facts in this case, appellees could very well have believed that they were not named as parties in the original complaint for tactical reasons or because appellant lacked evidence of their alleged participation in the conspiracy when he filed the complaint. Thus, we find no error in the district court’s ruling that appellant’s claims against the appellees fail to relate back.

Appellant having failed to demonstrate that the district court erred in its rulings on the fraudulent concealment and Rule 15(c) issues, the judgment of the district court is

Affirmed.

1

. In a preliminary portion of his appellate brief appellant mentions another issue — that the district court erred by determining the fraudulent concealment and Rule 15(c) issues on the basis of the parties’ affidavits, rather than by holding an evidentiary hearing. This issue is not raised in any fashion below. In the memorandum appellant filed with the district court, appellant’s single reference to the need for an evi-dentiary hearing or trial pertains to the merits of his civil rights claims. He did not inform the district court that he desired an evidentiary hearing on his fraudulent concealment and Rule 15(c) claims. Thus, we review this fourth issue for plain error only, Johnston v. Holiday Inns, Inc., 595 F.2d 890, 894 (1st Cir. 1979), and find none. The district court was in effect proceeding as if appellees had moved for summary judgment. We see nothing manifestly unjust about this in view of the fact that appellant has never contended, either here or below, that the court misapplied the strictures of Rule 56, Fed.R.Civ.P., in evaluating the parties’ affidavits. Appellant has not shown that he was prejudiced by the lack of an evidentiary hearing.

2

. The district court did err, however, in inferring from language in our prior opinion, Hernandez Jimenez, 576 F.2d at 404, that we had, during the course of that appeal, reviewed appellant’s affidavits and found them wanting to establish fraudulent concealment and the applicability of Rule 15(c). We made no mention of any such review in that opinion nor is it correct to assume that, merely because the affidavits were in the record then before us, we reviewed them for that purpose. If we had intended our prior opinion to include a ruling on the sufficiency of these affidavits for fraudulent concealment and Rule 15(c) purposes, we would have expressly so stated.

The court’s error in misreading our prior opinion is harmless, however, because the court made its own independent assessment of appellant’s affidavits, based its rulings on these assessments, and, as is indicated by this opinion, appellant has failed to show that these rulings are unsound.