News & Analysis as of

Doctrine of Equivalents Summary Judgment Appeals

Knobbe Martens

Reversal on Reverse Doctrine of Equivalents

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Conflicting expert testimony constituted substantial evidence supporting the jury’s rejection of a reverse doctrine of equivalents argument....more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases: Steuben Foods, Inc. v. Shibuya Hoppman Corp.

Steuben Foods, Inc. v. Shibuya Hoppman Corp., Appeal No. 2023-1790 (Fed. Cir. Jan. 24, 2025) In its only precedential patent decision this week, the Federal Circuit addressed an “anachronistic exception, long mentioned but...more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases - December 2024

Mirror Worlds Technologies, LLC v. Meta Platforms, Inc., Appeal Nos. 2022-1600, -1709 (Fed. Cir. Dec. 4, 2024) In this appeal from the United States District Court for the Southern District of New York, the Federal...more

McDermott Will & Emery

Equivalence Requires Element-by-Element Proof With Linking Argument

McDermott Will & Emery on

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

Dorsey & Whitney LLP

UGG, Is it Finally Over?

Dorsey & Whitney LLP on

A long-running battle between Deckers Outdoor Corp., the makers of UGG boots, and Australian Leather PTY Ltd. may finally be over after a May 7 ruling by the United States Court of Appeals for the Federal Circuit. The battle...more

McDermott Will & Emery

Doctrine of Equivalents Analysis Should Not Be Simple Binary Comparison

McDermott Will & Emery on

The US Court of Appeals for the Federal Circuit remanded a district court’s claim construction and grant of a defendant’s summary judgment motion of non-infringement under the doctrine of equivalents, finding that a...more

McDermott Will & Emery

Doctrine of Equivalents: Prosecution History Estoppel Can Be Both Amendment and Argument-Based

McDermott Will & Emery on

In a case involving at-home glucose monitoring systems, the US Court of Appeals for the Federal Circuit found the patent owner was estopped from asserting a doctrine of equivalents theory of infringement based on subject...more

McDermott Will & Emery

No Parking: Source of Anticipating Disclosure Determines If It’s “of Another”

McDermott Will & Emery on

In a combined opinion, the US Court of Appeals for the Federal Circuit addressed appeals from district court grants of summary judgment over two patents, and an appeal from the Patent Trial and Appeal Board (PTAB) that one of...more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases - February 2019

PATENT CASE OF THE WEEK - Duncan Parking Techs., Inc. v. IPS Group, Inc. and IPS Group, Inc. v. Duncan Solutions, Inc. et al., Appeal Nos. 2018-1205, -1360 (Fed. Cir. January 31, 2019) - The Court this week provided a...more

Schwabe, Williamson & Wyatt PC

Fresh From the Bench: Latest Federal Circuit Court Cases

PATENT CASE OF THE WEEK - Ottah v. Fiat Chrysler, Appeal No. 2017-1842 (March 7, 2018) - In Ottah v. Fiat Chrysler, the Federal Circuit affirmed a district court’s grant of summary judgment of non-infringement as to...more

Schwabe, Williamson & Wyatt PC

2017 and Early 2018 Supreme Court and Precedential Patent Cases From the Federal Circuit

Arbitration - Waymo v. Uber Technologies, 870 F.3d 1342 (Fed. Cir. 2017) - Waymo sued Uber and others for trade secret misappropriation and patent infringement. Uber contends that Waymo should be compelled to...more

Schwabe, Williamson & Wyatt PC

2017 Supreme Court and Precedential Patent Cases From the Federal Circuit, With Some Significant Cases from 2016

Arbitration - Waymo v. Uber Technologies, 870 F.3d 1342 (Fed. Cir. 2017) - Waymo sued Uber and others for trade secret misappropriation and patent infringement. Uber contends that Waymo should be compelled to...more

Knobbe Martens

Doctrine of Equivalents under Enzo Biochem Inc. v. Applera Corp.

Knobbe Martens on

Before Prost, O’Malley, and Wallach. Appeal from the District of Connecticut (nonprecedential). On August 2, 2017, the Federal Circuit affirmed a decision by the U.S. District Court for the District of Connecticut granting...more

McDermott Will & Emery

Look to Specification to Interpret Facially Unclear Claims

McDermott Will & Emery on

Addressing claim construction issues, the US Court of Appeals for the Federal Circuit reiterated the necessity of reading claims in the context of the written description when they are not clear on their face. Howmedica...more

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