News & Analysis as of

Patent Litigation Expert Testimony

McDermott Will & Emery

Equivalence Requires Element-by-Element Proof With Linking Argument

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The US Court of Appeals for the Federal Circuit affirmed a district court determination that a patent owner had not provided the “particularized testimony and linking argument” required to demonstrate equivalence under the...more

Akin Gump Strauss Hauer & Feld LLP

Expert Testimony Excluded under Kyocera Where Party Failed to Establish its Expert Possessed the Necessary 'Advanced Training and...

The Federal Circuit’s decision in Kyocera Senco Industrial Tools Inc. v. International Trade Commission articulated a bright-line test for patent expert admissibility: to testify from the perspective of a “person of ordinary...more

WilmerHale

Federal Circuit Patent Watch: Conclusory Expert Testimony Insufficient to Support Entire Market Value Rule for One Small Component...

WilmerHale on

Precedential and Key Federal Circuit Opinions - PROVISUR TECHNOLOGIES, INC. v. WEBER, INC. [OPINION] (23-1438, 10/2/24) (Moore, Taranto, Cecchi) - Moore, J. The Court reversed the denial of judgment as a matter of law...more

Baker Botts L.L.P.

Third Quarter 2024 Federal Circuit Law Update

Baker Botts L.L.P. on

Since serving as a Federal Circuit clerk, Michael Hawes has monitored that court's precedential opinions and prepares a deeply outlined index by subject matter (invalidity, infringement, claim construction, etc.) of relevant...more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases - September 2024 #4

EcoFactor, Inc. v. Google LLC, Appeal No. 2023-1101 (Fed. Cir. Sept. 25, 2024) The Federal Circuit’s only precedential opinion this week was a rare order that granted en banc review of a prior panel decision. Here, the...more

WilmerHale

Federal Circuit Patent Watch: An Expert Need Not Have Acquired the Requisite Skill Level Prior to the Time of the Invention

WilmerHale on

Precedential and Key Federal Circuit Opinions - WISCONSIN ALUMNI RESEARCH FOUNDATION v. APPLE INC. [OPINION] (2022-1884, 8/28/2024) (Prost, Taranto, and Chen) - Prost, J. The Court affirmed two final judgments of the...more

BakerHostetler

Patent Experts: No Ordinary Skill in the Art at the Time of Invention? No Problem!

BakerHostetler on

The hypothetical person with ordinary skill in the art will have a certain amount of requisite experience in the subject matter of the patent at the time of the invention of the patent....more

Akin Gump Strauss Hauer & Feld LLP

PTAB: Patent Drawings Without Precise Measurements May Be Relied Upon as Prior Art, but Only for What They Clearly Show

The Patent Trial and Appeal Board denied institution of an inter partes review petition because a prior art patent figure did not provide exact dimensions, and therefore could not meet the relevant claim limitation.  On...more

Baker Botts L.L.P.

Intellectual Property Report - August 2024

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Be an Expert: Precedential PTAB Decision on Conclusory Expert TestimonyStutti TilwaA recent precedential decision from the Patent Trial and Appeal Board (“PTAB”) may serve as a warning for those parties who plan on relying on...more

Baker Botts L.L.P.

Be an Expert: Precedential PTAB Decision on Conclusory Expert Testimony

Baker Botts L.L.P. on

A recent precedential decision from the Patent Trial and Appeal Board (“PTAB”) may serve as a warning for those parties who plan on relying on expert declarations in their inter partes reviews (“IPR”). On August 24, 2022, the...more

Farella Braun + Martel LLP

What Have We Learned From the First Six Months Under the New Federal Rule of Evidence 702?

As patent practitioners know, Daubert motions can be some of the most hotly contested and pivotal motions in the life of a patent case. These motions are used to exclude testimony from an opponent's expert witness, usually on...more

McDermott Will & Emery

The $X Factor: Demystifying Damages Calculations

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The US Court of Appeals for the Federal Circuit affirmed a district court’s decision to deny a defendant’s motion for a new trial on damages, finding that the plaintiff’s damages expert sufficiently showed that prior license...more

Akin Gump Strauss Hauer & Feld LLP

District Court Precludes Experienced Patent Attorney from Testifying as Expert Based on Lack of Pertinent Technical Expertise

A district court recently precluded a patent attorney from testifying as an expert in a patent infringement lawsuit where the proposed expert lacked the requisite technical expertise to assist the trier of fact in...more

McDermott Will & Emery

Is Evidence of All Claimed Elements in Prior Art Enough? Not Without Motivation to Combine

The US Court of Appeals for the Federal Circuit reversed a Patent Trial & Appeal Board obviousness decision, finding that disclosure in the prior art of all recited claim elements across multiple references, without more,...more

Jones Day

PTAB Issues Sanctions for Attempted Extortion During “Settlement Negotiations”

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Director Vidal recently issued sanctions against OpenSky Industries (“OpenSky”) for attempted extortion during settlement negotiations and abuse of the IPR process for US Patent 7,725,759 and awarded $413,264.15 to VLSI...more

Axinn, Veltrop & Harkrider LLP

Old Tricks/Bad Habits at the Federal Circuit

The Federal Circuit used to get a lot of flak for failing to defer to factual findings of the tribunal it was reviewing. My (highly unscientific) sense is that such criticism has eased somewhat, but I was reminded of it when...more

Manatt, Phelps & Phillips, LLP

Patent Office Director Designates Precedential Opinion on IPR Expert Evidence/Testimony

In Xerox Corp. v. Bytemark, Inc., the Director of the U.S. Patent and Trademark Office made precedential a prior decision of the Patent Trial and Appeal Board (the Board) over when an expert declaration from an inter partes...more

Fish & Richardson

Amended FRE 702 on Expert Testimony Effective December 1, 2023

Fish & Richardson on

Experts play a key role in patent litigation as they explain complex technical issues including infringement, validity, and damages to judges and juries. The persuasiveness of their testimony can often mean the difference...more

Knobbe Martens

Federal Circuit Review - October 2023

Knobbe Martens on

Substantial Evidence in Determining Obviousness - In Schwendimann v. Neenah, Inc, Appeal No. 22-1335, the Federal Circuit held that the PTAB’s finding on obviousness is supported by substantial evidence that a skilled...more

Sheppard Mullin Richter & Hampton LLP

Cyntec Company, Ltd. v. Chilisin Electronics Corp., Chilisin America Ltd. Nos. 2022-1873, (Fed. Cir. October 16, 2023)

This case is primarily about the Daubert standard as applied to expert testimony on damages. The Federal Circuit reversed the Northern District of California’s admission of expert testimony on damages, which relied on...more

Axinn, Veltrop & Harkrider LLP

A Tale of Two Experts

It was a tough day for opposing patent damages experts in Ecolab Inc. v. Dubois Chemicals, Inc., as Judge Andrews of the District of Delaware granted Daubert motions directed to both experts' reasonable royalty opinions. The...more

McDermott Will & Emery

No Money, Mo’ Problems: Speculative Damages Award Cannot Stand

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The US Court of Appeals for the Federal Circuit upheld a district court’s claim construction and jury instructions but reversed a premature judgment as a matter of law (JMOL) on obviousness and an imprecise damages award....more

Axinn, Veltrop & Harkrider LLP

Panduit: A Test for All Seasons

8 The Panduit test for determining lost profits in a patent case is almost fifty years old. The four-factor test doesn't exactly roll off the tongue, but it has persevered. Therefore, it is always of interest anytime there's...more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases - October 2023 #3

Cyntec Company, Ltd. v. Chilisin Electronics Corp., Appeal No. 2022-1873 (Fed. Cir. Oct. 16, 2023) In this week’s Case of the Week, the Federal Circuit reversed and remanded a California district court’s judgment as a...more

Akin Gump Strauss Hauer & Feld LLP

Results from Phase I and II Clinical Trials and Pending Phase III Clinical Trial Insufficient to Render Obvious Method of Treating...

In an ANDA case in the District of Delaware, the court has rejected an obviousness challenge to a patented method of increasing survival in patients having prostate cancer. The court found that early clinical trial results...more

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