“the setting of a reasonable royalty after infringement cannot be treated . . . as the equivalent of ordinary royalty negotiations among truly 'willing' patent owners and licensees.”
Under fire — who is questioning this case
Citations from separate opinions of courts that could overrule this
case.
This is a warning signal, not a treatment change. The flag color above is unaffected.
Concurrence
Smith & Nephew Incorporated v. Arthrex, Incorporated
(2015) “Under Panduit, “[t]o obtain as damages the profits on sales he would have made absent ... infringement, ... a patent owner must prove: (1) demand for the patented product, (2) absence of acceptable noninfringing substitutes, (3) his manufacturing and marketing capability to exploit the demand, and (4) the amount of the profit he would have made.” Id.”
Dissent
Rite-Hite Corp. v. Kelley Co.
(1995) “Fibre Works, Inc., 575 F.2d 1152, 1156 , 197 USPQ 726, 730 (6th Cir.1978) (Patentee manufacturer must prove lost profits by showing: “1) demand for the patented product, 2) absence of acceptable nonin-fringing substitutes, 3) his manufacturing and marketing capability to exploit the demand [for the patented product], and 4) the amount of profits he would have made.”)- 15 Seventh Circuit: Union…”
Top citers, strongest first. 50 distinct citers.
How cited ↗
discussed
Cited as authority (verbatim quote)
Wherevertv, Inc. v. Comcast Cable Communications, LLC
(2×)
also: Cited as authority (rule)
M.D. Fla. · 2022 · signal: see · quote attribution · 1 verbatim quote
· confidence high
the setting of a reasonable royalty after infringement cannot be treated . . . as the equivalent of ordinary royalty negotiations among truly 'willing' patent owners and licensees.
examined
Cited as authority (verbatim quote)
Cohesive Technologies, Inc. v. Waters Corp.
(3×)
also: Cited as authority (rule)
D. Mass. · 2007 · signal: see · quote attribution · 1 verbatim quote
· confidence high
a product lacking the advantages of that patented can hardly be termed a substitute 'acceptable' to the customer who wants those advantages.
discussed
Cited as authority (verbatim quote)
Micro Motion, Inc. v. Exac Corp.
(2×)
also: Cited as authority (rule)
N.D. Cal. · 1991 · quote attribution · 1 verbatim quote
· confidence high
product lacking the advantages of that patented can hardly be termed a substitute 'acceptable' to the customer who wants those advantages
cited
Cited as authority (rule)
Inventist Inc. v. Ninebot Inc. (Usa)
Fed. Cir. · 2025 · confidence medium
J.A. 151–54 (citing Panduit Corp. v. Stahlin Bros Fibre Works, Inc., 575 F.2d 1152, 1156 (6th Cir. 1978)). 3 The district court denied Ninebot’s mo- tion.
cited
Cited as authority (rule)
Sorrento Therapeutics, Inc. v. Anthony Mack
Del. Ch. · 2025 · confidence medium
Fibre Works, Inc., 575 F.2d 1152, 1159 (6th Cir. 1978); accord Conceptus, Inc. v. Hologic, Inc., 771 F. Supp. 2d 1164, 1180 (N.D.
cited
Cited as authority (rule)
10X Genomics, Inc. v. Parse Biosciences, Inc.
D. Del. · 2025 · confidence medium
Cir. 2017) (quoting Panduit Corp. v. Stahlin Brothers Fibre Works, Inc., 575 F.2d 1152, 1156 (6th Cir. 1978)). 7 A reagent is defined as “[a] substance used to carry out a laboratory test.
discussed
Cited as authority (rule)
Crystal Lagoons US Corp v. Cloward H2O
D. Utah · 2025 · confidence medium
Fibre Works, Inc., 575 F.2d 1152, 1156 (6th Cir. 1978). related to the second and fourth Panduit elements are unreliable, rendering his lost profits opinion inadmissible.156 Regarding the fourth element, Pacific takes issue with Bero’s assumption that Crystal Lagoons’ profit would have been the offered by Crystal Lagoons to Hard Rock in an unsigned letter of intent.157 The primary bases for Bero’s lost profits opinion are an unsigned letter of intent between Hard Rock and Crystal Lagoons for ,158 the fact that the offer was “in line with” two other projects,159 and an unpreserved (an…
discussed
Cited as authority (rule)
Lexmark International Inc. v. Universal Imaging Industries, LLC
M.D. Fla. · 2023 · confidence medium
Fibre Works, 575 F.2d 1152, 1164 (6th Cir. 1978); Mentor Graphics Corp., 851 F.3d at 1285 (listing the Panduit factors as: “(1) demand for the patented product; (2) absence of acceptable non-infringing alternatives; (3) manufacturing and marketing capability to exploit the demand; and (4) the amount of profit it would have made”). 2 See Georgia-Pacific Corp. v. United States Playwood Corp., 318 F. Supp. 1116 (S.D.N.Y. 1970).
discussed
Cited as authority (rule)
Lexmark International Inc. v. Universal Imaging Industries, LLC
M.D. Fla. · 2023 · confidence medium
Fibre Works, 575 F.2d 1152, 1164 (6th Cir. 1978); Mentor Graphics Corp., 851 F.3d at 1285 (listing the Panduit factors as: “(1) demand for the patented product; (2) absence of acceptable non-infringing alternatives; (3) manufacturing and marketing capability to exploit the demand; and (4) the amount of profit it would have made”). causation or properly apportion damages under Federal Circuit precedent, UII may reassert its position on a motion for judgment as a matter of law or directed verdict.
discussed
Cited as authority (rule)
VARTA Microbattery GmbH v. Audio Partnership LLC
E.D. Tex. · 2023 · confidence medium
Fibre Works, Inc., 575 F.2d 1152, 1156 (6th Cir. 1978); Metzdorff Damages Report (Appendix B – Panduit Factors) at ¶¶ 1–20 (Demand for the patented product), ¶¶ 21–38 (Absence of acceptable non-infringing substitutes), ¶¶ 39–47 (Manufacturing and marketing capability to exploit demand) ¶¶ 48–59 (Amount of profit that would have been earned).
cited
Cited as authority (rule)
Fleet Engineers, Inc. v. Mudguard Technologies, LLC
Fed. Cir. · 2023 · confidence medium
Fibre Case: 22-2001 Document: 37 Page: 16 Filed: 08/15/2023 16 FLEET ENGINEERS, INC. v. MUDGUARD TECHNOLOGIES, LLC Works, Inc., 575 F.2d 1152, 1156 (6th Cir. 1978)).
cited
Cited as authority (rule)
Fleet Engineers, Inc. v. Mudguard Technologies, LLC
Fed. Cir. · 2023 · confidence medium
Fibre Case: 22-2001 Document: 37 Page: 16 Filed: 08/15/2023 16 FLEET ENGINEERS, INC. v. MUDGUARD TECHNOLOGIES, LLC Works, Inc., 575 F.2d 1152, 1156 (6th Cir. 1978)).
cited
Cited as authority (rule)
OrthoPediatrics Corp. v. Wishbone Medical, Inc.
N.D. Ind. · 2023 · confidence medium
Fibre Works, 575 F.2d 1152, 1156 (6th Cir. 1978); and lost profits damages based on market share as considered in Ericsson, Inc. v. Harris Corp., 352 F.3d 1369 , 1376– 1378 (Fed.
discussed
Cited as authority (rule)
The Chamberlain Group LLC v. Overhead Door Corporation
E.D. Tex. · 2023 · confidence medium
Fibre Works, Inc., 575 F.2d 1152, 1156 (6th Cir. 1978)).) Relevant to the second Panduit factor, Defendants contend that their damages expert, Mr. Tate, “testified that Overhead Door documentary evidence shows that the majority of customers do not use WiFi features—i.e., the features that include the accused functionalities.” (Dkt.
discussed
Cited as authority (rule)
PureWick Corporation v. Sage Products, LLC
(2×)
also: Cited "see"
D. Del. · 2023 · confidence medium
Cir. 2017) (quoting Panduit Corp. v. Stahlin Brothers Fibre Works, Inc., 575 F.2d 1152, 1156 (6th Cir. 1978)). “[U]nder the two- supplier test, a patentee must show: 1) the relevant market contains only two suppliers, 2) its own manufacturing and marketing capability to make the sales that were diverted to the infringer, and 3) the amount of profit it would have made from these diverted sales.” Micro Chem, 318 F.3d at 1124 .
cited
Cited as authority (rule)
Inventist, Inc. v. Ninebot, Inc.
W.D. Wash. · 2023 · confidence medium
Fibre Works, Inc., 575 F.2d 1152, 1156 (6th Cir. 1978); 3 BLC Leisure Prods., Inc. v. Windsurfing Int’l, Inc., 1 F.3d 1214, 1217 (Fed.
discussed
Cited as authority (rule)
ArcherDX, LLC v. QIAGEN Sciences, LLC
(2×)
also: Cited "see"
D. Del. · 2022 · confidence medium
Cir. 2017) (quoting Panduit Corp. v. Stahlin Brothers Fibre Works, Inc., 575 F.2d 1152, 1156 (6th Cir. 1978)).
cited
Cited as authority (rule)
FCX Solar, LLC v. FTC Solar, Inc.
S.D.N.Y. · 2022 · confidence medium
Fibre Works, Inc., 575 F.2d 1152, 1159 (6th Cir. 1978) (discussing relevant factors examined in determining a reasonable royalty).
cited
Cited as authority (rule)
Talavera Hair Products, Inc. v. Taizhou Yunsung Electrical Appliance Co., LTD.
S.D. Cal. · 2022 · confidence medium
Fibre Works, Inc., 575 F.2d 1152, 1156 (6th Cir. 1978).” Viasat, Inc. v. Space 7 Sys./Loral, Inc., No. 3:12-CV-00260-MLH-WVG, 2014 WL 3896073 , at *11 (S.D.
cited
Cited as authority (rule)
Basf Plant Science, Lp v. Commonwealth Scientific
Fed. Cir. · 2022 · confidence medium
Fibre Works, Inc., 575 F.2d 1152, 1163 (6th Case: 20-1415 Document: 62 Page: 47 Filed: 03/15/2022 BASF PLANT SCIENCE, LP v. COMMONWEALTH SCIENTIFIC 47 Cir. 1978)).
cited
Cited as authority (rule)
Basf Plant Science, Lp v. Commonwealth Scientific
Fed. Cir. · 2022 · confidence medium
Fibre Works, Inc., 575 F.2d 1152, 1163 (6th Case: 20-1415 Document: 62 Page: 47 Filed: 03/15/2022 BASF PLANT SCIENCE, LP v. COMMONWEALTH SCIENTIFIC 47 Cir. 1978)).
discussed
Cited as authority (rule)
Tubular Rollers, LLC v. Maximus Oilfield Products, LLC
S.D. Tex. · 2021 · confidence medium
To determine whether “but for” causation is present, the Federal Circuit often applies the four-part test set forth in Panduit Corp. v. Stahlin Brothers Fibre Works, Inc., 575 F.2d 1152, 1156 (6th Cir. 1978); see, e.g., Kearns, 32 F.3d at 1551.
discussed
Cited as authority (rule)
ICM Controls Corp. v. Honeywell International, Inc.
(2×)
also: Cited "see"
N.D.N.Y. · 2021 · confidence medium
Fibre Works, Inc., 575 F.2d 1152, 1156 (6th Cir. 1978) (claimant must prove the absence of acceptable non-infringing substitutes in order to demonstrate entitlement to lost profits)).
cited
Cited as authority (rule)
Innovation Ventures, LLC v. Custom Nutrition Laboratories, LLC
E.D. Mich. · 2021 · confidence medium
Fibre Works, 575 F.2d 1152, 1156 (6th Cir. 1978). infer that [plaintiff] could have sold its market share of [defendant’s] infringing sales wherever the opportunity occurred.” Id.
discussed
Cited as authority (rule)
DUSA Pharmaceuticals, Inc. v. Biofrontera Inc.
D. Mass. · 2020 · confidence medium
Fibre Works, Inc., 575 F.2d 1152, 1156 (6th Cir. 1978), is “[o]ne ‘useful, but non-exclusive’ method to establish the patentee’s entitlement to lost profits.” Mentor Graphics Corp. v. EVE-USA, Inc., 851 F.3d 1275, 1284 (Fed.
discussed
Cited as authority (rule)
DUSA Pharmaceuticals, Inc. v. Biofrontera Inc.
D. Mass. · 2020 · confidence medium
Fibre Works, Inc., 575 F.2d 1152, 1156 (6th Cir. 1978), is “[o]ne ‘useful, but non-exclusive’ method to establish the patentee’s entitlement to lost profits.” Mentor Graphics Corp. v. EVE-USA, Inc., 851 F.3d 1275, 1284 (Fed.
discussed
Cited as authority (rule)
DUSA Pharmaceuticals, Inc. v. Biofrontera Inc.
D. Mass. · 2020 · confidence medium
Fibre Works, Inc., 575 F.2d 1152, 1156 (6th Cir. 1978), is “[o]ne ‘useful, but non-exclusive’ method to establish the patentee’s entitlement to lost profits.” Mentor Graphics Corp. v. EVE-USA, Inc., 851 F.3d 1275, 1284 (Fed.