News & Analysis as of

Expert Testimony Evidence Claim Construction

Vorys, Sater, Seymour and Pease LLP

The Precedent: The Federal Circuit Remands and Reassigns District Court Patent Infringement Case to a New Judge

In this edition of The Precedent, we outline the decision in Trudell Medical International Inc. v. D R Burton Healthcare LLC. The U.S. Court of Appeals for the Federal Circuit recently affirmed in part, reversed in part and...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

PTAB Year in Review – Caveat Experimenter: Using Experimental Data in PTAB Proceedings Comes With Risks

Parties involved in Patent Trial and Appeal Board (PTAB) proceedings sometimes contemplate submitting experimental data to support their positions. Although such data can be useful, there also are risks. Several recent cases...more

Knobbe Martens

New Trial Granted Because “Nearly All” of the Defendant’s Noninfringement Evidence Was Untimely

Knobbe Martens on

The district court erred by admitting untimely expert testimony on noninfringement and by refusing to grant a new trial after the jury found noninfringement. Trudell Medical International (“Trudell”) sued D R Burton...more

Irwin IP LLP

Federal Circuit Opts Not to Play its REVERSE [DOE] Card 

Irwin IP LLP on

Steuben Foods, Inc. v. Shibuya Hoppmann Corp., No. 23-1790 (Fed. Cir. 2025) - On January 24, 2025, the Federal Circuit considered the “long mentioned but rarely applied” reverse doctrine of equivalents (“RDOE”) defense. ...more

McDermott Will & Schulte

Bottling the Truth: Equivalence and Reverse Equivalence

The US Court of Appeals for the Federal Circuit ruled that the “substantially the same way” comparison in connection with a doctrine of equivalents (DOE) analysis involving a means-plus-function claim limitation should focus...more

Knobbe Martens

Expert Testimony That Contradicts Patent Specification Fails to Create a Genuine Issue of Fact in a Patent Eligibility Dispute

Knobbe Martens on

CAREDX, INC. V. NATERA, INC. Before Lourie, Bryson, and Hughes - Summary: Expert testimony that steps of challenged patent claims were unconventional failed to preclude summary judgment of ineligibility where...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

PTAB Strategies and Insights Newsletter: May 2022

The PTAB Strategies and Insights newsletter provides timely updates and insights into how best to handle proceedings at the USPTO. It is designed to increase return on investment for all stakeholders looking at the entire...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

2021 PTAB Year in Review: Analysis & Trends: Editors' Introduction

Love it or hate it, ignore the USPTO Patent Trial and Appeal Board (PTAB) at your peril. The introduction of the PTAB as part of the America Invents Act over ten years ago has forever changed patent litigation. In its first...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

2021 PTAB Year in Review: Analysis & Trends

[co-author: Jamie Dohopolski] Love it or hate it, ignore the USPTO Patent Trial and Appeal Board (PTAB) at your peril. The introduction of the PTAB as part of the America Invents Act over ten years ago has forever changed...more

Goodwin

ITC 337 Quarterly Insider Q2 2020

Goodwin on

Goodwin’s 337 Quarterly Insider remains the premiere publicly available source for keeping up to date on all meaningful decisions coming out of the Commission. Please find below Goodwin’s insights on the months of April, May,...more

Fenwick & West LLP

Intellectual Property Bulletin - Summer 2018

Fenwick & West LLP on

In This Issue - US Taxation of IP After Tax Reform - U.S. taxation of intellectual property has become astoundingly more complex after the Tax Cuts and Jobs Act. The new rules are so complex that the IRS and Treasury...more

Jones Day

No Genuine Issue of Fact Where Petitioner’s Claim Construction Is Wrong

Jones Day on

The PTAB’s recent decision denying rehearing in United Microelectronics Corp. v. Lone Star Silicon Innovations LLC, IPR2017-01513, Paper 10 (PTAB May 22, 2018) sheds light on the Board’s practice under 37 C.F.R. 42.108(c),...more

Jones Day

Not So Secondary: Overcoming Obviousness With Objective Indicia

Jones Day on

On April 2, 2018, the PTAB issued a final written decision in Fox Factory finding that the petitioner failed to carry its burden in showing the instituted claims were unpatentable as obvious. Fox Factory, Inc. v. SRAM, LLC,...more

Mintz - Intellectual Property Viewpoints

Establishing Obviousness: A Fundamental Case of Evidence Over Arguments

The Federal Circuit affirmed the Patent Trial and Appeal Board’s inter partes review decision declaring various claims of patent owner Thales’ U.S. Patent No. 6,474,159 (“the ‘159 patent”) nonobvious. In doing so, the Federal...more

McDermott Will & Schulte

PTAB Grants Late Motion to Amend, But Amended Claims Fail to Breathe Life into Patent

Addressing the standards for a motion to amend claims during an inter partes review (IPR) proceeding, the Patent Trial and Appeal Board (PTAB or Board) granted a motion to amend the claims in an IPR, but ultimately denied...more

Foley & Lardner LLP

Federal Circuit Finds Flexibility in Admissibility of Expert Testimony on Infringement

Foley & Lardner LLP on

In MeadWestVaco Corp. v. Rexam Beauty and Closures, Inc., the Federal Circuit upheld the admissibility of expert testimony that was not fully aligned with the district court’s claim construction. In so doing, the court...more

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