knowledge doctrine in New Jersey

2026The common knowledge doctrine applied where the doctor pulled the wrong tooth, Hubbard, 168 N.J. at 396 ; where the patient died from an air embolism during a diagnostic hysteroscopy when someone accidently connected a gas line rather than a fluid line to the patient's uterus, Est. of Chin v. Saint Barnabas Med.

2026Based on his review of plaintiff's pleadings, the judge concluded "plaintiff['s] claims [we]re not subject to the common knowledge exception to the AOM requirement" consistent with our Supreme Court's decision in Hubbard v. Reed, 168 N.J. 387, 390 (2001).

2026Our Supreme Court has explained that "[u]nder the common knowledge doctrine, . . . a malpractice case against a licensed professional may present triable issues without resort to the testimony of an expert." Rosenberg v. Cahill, 99 N.J. 318, 325 (1985). "[T]he application of the common knowledge doctrine in a malpractice action" is warranted when "the issue of negligence is not related to technical matter peculiarly within the knowledge of the licensed practitioner." Ibid. (quoting Sanzari v. Rosenfeld, 34 N.J. 128, 142 (1961)).

2026Our Supreme Court has explained that "[u]nder the common knowledge doctrine, . . . a malpractice case against a licensed professional may present triable issues without resort to the testimony of an expert." Rosenberg v. Cahill, 99 N.J. 318, 325 (1985). "[T]he application of the common knowledge doctrine in a malpractice action" is warranted when "the issue of negligence is not related to technical matter peculiarly within the knowledge of the licensed practitioner." Ibid. (quoting Sanzari v. Rosenfeld, 34 N.J. 128, 142 (1961)).

2026Our Supreme Court has explained that "[u]nder the common knowledge doctrine, . . . a malpractice case against a licensed professional may present triable issues without resort to the testimony of an expert." Rosenberg v. Cahill, 99 N.J. 318, 325 (1985). "[T]he application of the common knowledge doctrine in a malpractice action" is warranted when "the issue of negligence is not related to technical matter peculiarly within the knowledge of the licensed practitioner." Ibid. (quoting Sanzari v. Rosenfeld, 34 N.J. 128, 142 (1961)).

2022"The basic postulate for the application of the common knowledge doctrine in a malpractice action 'is that the issue of negligence is not related to technical matter peculiarly within the knowledge of the licensed practitioner.'" Rosenberg, 99 N.J. at 325 (quoting Sanzari, 34 N.J. at 142 ).

2025Ctr., 160 N.J. 454, 469 (1999) (quoting Rosenberg, 99 N.J. at 325 ) (applying the common knowledge doctrine in malpractice matter when doctor caused gasoline to enter a patient's uterus instead of fluid) .

2024Examples of cases applying the common knowledge doctrine exception include extracting the wrong tooth, Hubbard, 168 N.J. at 396 ; pumping gas instead of fluid into a patient's uterus, Est. of Chin, 160 N.J. at 471 ; and filling A-3554-21 7 a prescription with medication other than the drug prescribed, Bender v. Walgreen E.

2024In determining whether the AOM statute applies to a particular claim, courts consider three factors: (1) whether the action is for "damages for personal injuries, wrongful death or property damage" (nature of injury); (2) whether the action is for "malpractice or negligence" (cause of action); and (3) whether the "care, skill or knowledge exercised or exhibited in the treatment, practice or work that is the subject of the A-3499-22 6 complaint [] fell outside acceptable professional or occupational standards or treatment practices" (standard of care). [Couri v. Gardner, 173 N.J. 328, 334 (2002

2009Nonetheless, even when the terms of the Statute require an affidavit of merit, our courts reject a literal interpretation if it will "lead to results inconsistent with the overall purpose of the [S]tatute." Couri, supra, 173 N.J. at 334 , 801 A. 2d 1134 (internal quotations omitted); see, e.g., Hubbard, supra, 168 N.J. at 395-97 , 774 A. 2d 495 (recognizing a common knowledge exception).

2025Examples of circumstances falling under the common knowledge exception include a dentist extracting the wrong tooth, Hubbard v. Reed, 168 N.J. 387, 396-97 (2001), and a doctor reading specimen numbers as actual test results, Palanque v. Lambert-Woolley, 168 N.J. 398, 407-08 (2001).

2022Examples of circumstances falling under the common knowledge exception include a dentist extracting the wrong tooth, Hubbard v. Reed, 168 N.J. 387, 396-97 (2001), and a doctor reading specimen numbers as actual test results, Palanque v. Lambert-Woolley, 168 N.J. 398, 407-08 (2001).

2024Co., 399 N.J.

2021Co., 399 N.J.

2024A-3499-22 7 Our courts have established that the common knowledge exception is properly applied in cases "'involv[ing] obvious or extreme error.'" Cowley, 242 N.J. at 11 (quoting Cowley, 456 N.J.

2024Our case law establishes the common knowledge exception is properly applied in cases that "involve obvious or extreme error," Cowley v. Virtua Health Sys., 456 N.J.

2025Ctr., 279 N.J.

2022Ctr., 279 N.J.

2025A-1576-24 13 Considering the common knowledge exception, the New Jersey Supreme Court stated, "[t]he test of need of expert testimony is whether the matter to be dealt with is so esoteric that jurors of common judgment and experience cannot form a valid judgment as to whether the conduct of the party was reasonable." Cowley, 242 N.J. at 19 (citing Butler v. Acme Mkts., Inc., 89 N.J. 270, 283 (1982)).

2021As stated by our Supreme Court in considering the common knowledge exception to the AOM requirement, "[t]he test of need of expert testimony is whether the matter to be dealt with is so esoteric that jurors of common judgment and experience cannot form a valid judgment as to whether the conduct of the party was reasonable." Cowley v. Virtua Health Sys., 242 N.J. 1 , 19 (2020) (citing Butler v. Acme Mkts., Inc., 89 N.J. 270, 283 (1982)). "[T]he exception is properly invoked only when 'jurors A-2709-19 8 are competent to assess simple negligence occurring . . . without expert testimony to establ

2019In other words, the doctrine is most appropriate "where the carelessness of the defendant is readily apparent to anyone of average intelligence and ordinary experience." Ibid.; see, e.g., Estate of Chin, 160 N.J. at 470-71 (applying the common knowledge doctrine where the "incorrect hook-up of the hysteroscope . . . introduced gas into [the decedent's] uterus and bloodstream"); see also Steinke v. Bell, 32 N.J.

2019In other words, the doctrine is most appropriate "where the carelessness of the defendant is readily apparent to anyone of average intelligence and ordinary experience." Ibid.; see, e.g., Estate of Chin, 160 N.J. at 470-71 (applying the common knowledge doctrine where the "incorrect hook-up of the hysteroscope . . . introduced gas into [the decedent's] uterus and bloodstream"); see also Steinke v. Bell, 32 N.J.

2026Plaintiff's case is readily distinguishable from these cases applying the common knowledge doctrine. "'[C]ourts must look to the underlying factual allegations, and not how the claim is captioned in the complaint . . . . [I]t is the nature of the proof required that controls.'" Triarsi, 422 N.J.

2026Plaintiff's case is readily distinguishable from these cases applying the common knowledge doctrine. "'[C]ourts must look to the underlying factual allegations, and not how the claim is captioned in the complaint . . . . [I]t is the nature of the proof required that controls.'" Triarsi, 422 N.J.

2001See, e.g., Chin, supra, 160 N.J. at 470 , 734 A. 2d 778 (holding that doctrine applied where patient's death was caused by incorrect hook-up of hysteroscope which introduced gas into bloodstream causing fatal embolism); Magner v. Beth Israel Hosp., 120 N.J.Super. 529, 534 , 295 A. 2d 363 (App.Div.1972), certif. denied, 62 N.J. 199 , 299 A. 2d 733 (1973) (holding that doctrine applied where patient was burned in flash fire when spark from cauterizing tool ignited alcohol which surgeon had applied to patient's skin); Becker v. Eisenstodt, 60 N.J.Super. 240, 246-47 , 158 A. 2d 706 (App.Div.1960)

2001See, e.g., Chin, supra, 160 N.J. at 470 , 734 A. 2d 778 (holding that doctrine applied where patient's death was caused by incorrect hook-up of hysteroscope which introduced gas into bloodstream causing fatal embolism); Magner v. Beth Israel Hosp., 120 N.J.Super. 529, 534 , 295 A. 2d 363 (App.Div.1972), certif. denied, 62 N.J. 199 , 299 A. 2d 733 (1973) (holding that doctrine applied where patient was burned in flash fire when spark from cauterizing tool ignited alcohol which surgeon had applied to patient's skin); Becker v. Eisenstodt, 60 N.J.Super. 240, 246-47 , 158 A. 2d 706 (App.Div.1960)

2025See, e.g., Bates, 72 N.J. at 222-23, 225 (finding broker negligent for ignorance of regulation that would have provided temporary coverage to client); DiMarino v. Wishkin, 195 N.J.

2017See, e.g., Bates v. Gambino, 72 N.J. 219, 226 (1977) (per se negligence established where broker lacked knowledge required by law); Dimarino v. Wishkin, 195 N.J.

2025"Stated differently, knowledge of hostility and ongoing acts consistent with that hostility in such a setting is insufficient to trigger the limitation timeframe within which a LAD cause of action must be filed." Alexander v. Seton Hall Univ., 204 N.J. 219, 230 (2010).

2025"Stated differently, knowledge of hostility and ongoing acts consistent with that hostility in such a setting is insufficient to trigger the limitation timeframe within which a LAD cause of action must be filed." Alexander v. Seton Hall Univ., 204 N.J. 219, 230 (2010).

2026However, in the context of a discrimination claim, New Jersey has adopted the Supreme Court 's ruling in National Rail Road Passenger Corp. v. Morgan, 536 U.S. 101, 113 (2002), that "a victim's knowledge of a claim is insufficient to start the limitations clock so long as the defendant continues the series of non -discrete acts on which the claim as a whole is based." Shepherd, 174 N.J. at 22 .

2025The Court also found that "a victim's knowledge of a claim is insufficient to start the limitations clock so long as the defendant continues the series of non-discrete acts on which the claim as a whole is based." Shepherd, 174 N.J. at 22 .

2024Thus, in certain circumstances, where a plaintiff is permitted to rely upon the common knowledge exception to the AOM requirement, a court may consider "coupl[ing] it with the use of a res ipsa charge to permit the jury to draw an inference of medical negligence." Id. at 92 (citing Buckelew, 87 N.J. at 526 - 27).

1998Unlike the related but distinct doctrine of common knowledge, res ipsa loquitur requires expert testimony “to the effect that the medical community recognizes that an event does not ordinarily occur in the absence of negligence.” Buckelew v. Grossbard, supra, 87 N.J. at 527 , 435 A.2d 1150 ; Smallwood v. Mitchell, 264 N.J.Super. 295, 297-98 , 624 A.2d 623 (App.Div.), certif. denied, 134 N.J. 481 , 634 A.2d 527 (1993).

2022A-1730-19 8 In Sommers, this court applied the common knowledge doctrine where the plaintiff alleged she accepted a low settlement offer "because her attorney inadequately prepared the case, failed to submit a legal argument to support [plaintiff's] . . . claim and misrepresented the state of the case to [plaintiff] ." Sommers, 287 N.J.

2007Or, as the Court put it in Rosenberg v. Cahill, 99 N.J. 318, 325 , 492 A. 2d 371 (1985), "[t]he most appropriate application of the common knowledge doctrine involves situations where the carelessness of the defendant is readily apparent to anyone of average intelligence and ordinary experience." We have also observed that "expert testimony may not be necessary to establish proximate cause in every legal malpractice case, particularly where the causal relationship between the attorney's legal malpractice and the client's loss is so obvious that the trier of fact can resolve the issue as a matt

2020However, “a jury of laymen cannot be allowed to speculate as to whether the procedure followed by a [defendant professional] conformed to the required professional standards.” Schueler v. Strelinger, 43 N.J. 330, 345 (1964).

2020"Rather, the common knowledge exception to the [AOM] [s]tatute applies only to cases where expert testimony is not needed to establish the applicable standard of care." Ibid.

2020Super. 584, 591-92 (App. Div. 2008) (holding that the common knowledge exception applies to a pharmacist filling a prescription with a drug other than the one prescribed); Becker v. Eisenstodt, 60 N.J.

2001See, e.g., Chin, supra, 160 N.J. at 470 , 734 A. 2d 778 (holding that doctrine applied where patient's death was caused by incorrect hook-up of hysteroscope which introduced gas into bloodstream causing fatal embolism); Magner v. Beth Israel Hosp., 120 N.J.Super. 529, 534 , 295 A. 2d 363 (App.Div.1972), certif. denied, 62 N.J. 199 , 299 A. 2d 733 (1973) (holding that doctrine applied where patient was burned in flash fire when spark from cauterizing tool ignited alcohol which surgeon had applied to patient's skin); Becker v. Eisenstodt, 60 N.J.Super. 240, 246-47 , 158 A. 2d 706 (App.Div.1960)

2001See, e.g., Chin, supra, 160 N.J. at 470 , 734 A. 2d 778 (holding that doctrine applied where patient's death was caused by incorrect hook-up of hysteroscope which introduced gas into bloodstream causing fatal embolism); Magner v. Beth Israel Hosp., 120 N.J.Super. 529, 534 , 295 A. 2d 363 (App.Div.1972), certif. denied, 62 N.J. 199 , 299 A. 2d 733 (1973) (holding that doctrine applied where patient was burned in flash fire when spark from cauterizing tool ignited alcohol which surgeon had applied to patient's skin); Becker v. Eisenstodt, 60 N.J.Super. 240, 246-47 , 158 A. 2d 706 (App.Div.1960)

1997See, e.g., Magner v. Beth Israel Hosp., 120 N.J.Super. 529, 534 , 295 A.2d 363 (App.Div.1972) (finding that a jury could conclude from “common experience” that defendant doctor was negligent when plaintiff suffered bums while unconscious during surgery), certif. denied, 62 N.J. 199 , 299 A.2d 733 (1973); Tramutola v. Bortone, 118 N.J.Super. 503, 512-13 , 288 A.2d 863 (App.Div.1972) (ruling that a jury was competent to resolve issue of defendant physician’s negligence, without expert testimony, where x-rays obviously showed needle in plaintiff’s chest but defendant had failed to inform the plai

2026However, in the context of a discrimination claim, New Jersey has adopted the Supreme Court 's ruling in National Rail Road Passenger Corp. v. Morgan, 536 U.S. 101, 113 (2002), that "a victim's knowledge of a claim is insufficient to start the limitations clock so long as the defendant continues the series of non -discrete acts on which the claim as a whole is based." Shepherd, 174 N.J. at 22 .

2026The Court differentiated claims based on "discrete acts" from "hostile work environment" claims, since discrete acts are "easy to identify" and each incident "constitutes a separate actionable 'unlawful employment practice.'" Shepherd, 174 N.J. at 19 (quoting Morgan, 536 U.S. at 114 ).

1999Dr. Goldfarb appealed, and the Appellate Division reversed, ruling that the jury was properly instructed both in the doctrine of Anderson and in the doctrine of common knowledge. 312 N.J.Super. 81 , 711 A.2d 352 (1998).

1999Dr. Goldfarb appealed, and the Appellate Division reversed, ruling that the jury was properly instructed both in the doctrine of Anderson and in the doctrine of common knowledge. 312 N.J.Super. 81 , 711 A.2d 352 (1998).

2023It is well-settled that in order to establish legal malpractice, a plaintiff will typically have to present expert testimony to prove the essential elements to show "(1) the existence of an attorney-client relationship creating a duty of care upon the attorney; (2) the breach of that duty; and (3) proximate causation." Stoeckel v. Twp. of Knowlton, 387 N.J.

2022But under the common knowledge doctrine, no expert is required and the jury itself may "supply the applicable standard of care and . . . obviate the necessity for expert testimony . . . ." Ibid. (quoting Sanzari v. Rosenfeld, 34 N.J. 128, 141 (1961)).