News & Analysis as of

Doctrine of Equivalents Expert Testimony

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

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

Federal Circuit Appeals from the PTAB and ITC: Summaries of Key 2022 Decisions: Kyocera Senco Indus. Tools v. Int’l Trade Comm’n,...

The patent holder, Kyocera, filed a complaint in the International Trade Commission against Koki in Certain Gas Spring Nailer Prods. & Components Thereof, Inv. No. 337-TA-1082, 2020 WL 2093834 (Apr. 28, 2020). Kyocera’s...more

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

Federal Circuit Appeals from the PTAB and ITC: Summaries of Key 2022 Decisions

As part of the recovery from the global COVID-19 pandemic, the U.S. Court of Appeals for the Federal Circuit took steps to return to normal operations. It began requiring live oral arguments in August 2022 and, by November,...more

Sunstein LLP

It’s Not Complicated: Make Sure the Technical Expert You Retain to Testify About Infringement Has Credentials That Match the Level...

Sunstein LLP on

In infringement suits, the patentee must show that each element of a patent claim is infringed either literally by an accused product or infringed under the doctrine of equivalents. Literal infringement means the accused...more

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

PTAB Strategies and Insights: January 2022 - Federal Circuit Holds that Your Technical Expert Must be a POSA

In Kyocera Senco Industrial Tools Inc. v. International Trade Commission, the Federal Circuit held in a precedential opinion that expert witnesses must at least have ordinary skill in the art. Because Kyocera’s expert did not...more

Morrison & Foerster LLP - Federal Circuitry

One Last look at Patent Cases in January

Last week wrapped up a busy January for the Federal Circuit. Oral arguments returned to a telephonic format, and arguments next month will be by video (although still audio-only for the public). As the month is now in the...more

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

PTAB Strategies and Insights: January 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

Fitch, Even, Tabin & Flannery LLP

Federal Circuit Nails Unqualified Expert

On January 21, in Kyocera Senco Industrial Tools Inc. v. ITC, the Federal Circuit found that the patent owner’s expert witness on infringement was unqualified under the definition of the level of ordinary skill in the art...more

Mintz - Intellectual Property Viewpoints

Federal Circuit Upholds Application of Dedication-Disclosure Doctrine at the Pleading Stage

On May 8, 2020, the Court of Appeals for the Federal Circuit affirmed the District of Delaware’s application of the disclosure-dedication doctrine in granting a motion for judgment on the pleadings in Eagle Pharmaceuticals...more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases - July 2019

PATENT CASE OF THE WEEK - Elbit Systems Land and C4I Ltd. v. Hughes Network Systems, LLC, Appeal No. 2018-1910 (Fed. Cir. June 25, 2019) - In this appeal from the United States District Court for the Eastern District of...more

Schwabe, Williamson & Wyatt PC

Latest Federal Circuit Court Cases - July 2018 #2

PATENT CASE OF THE WEEK - Power Integrations, Inc. v. Fairchild Semiconductor Int’l, Inc., Appeal Nos. 2016-2691, 2017-1875 (Fed. Cir. July 3, 2018) - The Court affirmed a jury verdict of patent infringement and vacated a...more

Foley & Lardner LLP

Federal Circuit Finds No "Way" To Support Doctrine Of Equivalents

Foley & Lardner LLP on

In Akzo Nobel Coatings, Inc. v. Dow Chemical Co., the Federal Circuit upheld the district court’s grant of summary judgment of no infringement under the doctrine of equivalents because the patent holder had failed to...more

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