News & Analysis as of

Expert Testimony Evidence Patent Invalidity

McDermott Will & Schulte

Dim damages methods can doom bright ideas

In a mixed ruling on evidentiary exclusions and damages methodology, the US Court of Appeals for the Federal Circuit affirmed in part, reversed in part, vacated in part, and remanded a district court’s decision that excluded...more

Akin Gump Strauss Hauer & Feld LLP

N.D. Cal. Judge Reverses Prior Order Barring Device Art “Materially Identical” to Printed Publications After Federal Circuit...

A Northern District of California judge recently granted a motion to reconsider his summary judgment ruling that defendant was barred from raising certain “device art” due to IPR estoppel under 35 U.S.C. § 315(e)(2). In the...more

A&O Shearman

Evidence Exclusion And Daubert Motion Denials Must Be Supported By Valid Legal Rule And Reasoning; Damage Calculation Must Account...

A&O Shearman on

In Jiaxing Super Lighting Elec. Appliance, Co. v. CH Lighting Tech. Co., Ltd, the Court of Appeals for the Federal Circuit reviewed the judgment in a patent infringement case involving three patents owned by Jiaxing Super...more

A&O Shearman

Poster Presentation Tied To Business Objectives Serves As Evidence Of Infringement Of Patented Methods

A&O Shearman on

On February 12, 2025, the United States District Court for the District of Delaware denied defendant Parse Biosciences’s (“Parse”) motions for summary judgment that: (i) Parse had never actually conducted any direct or...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

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

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

Knobbe Martens

Non-Expert Testimony on Obviousness Is Inadmissible

Knobbe Martens on

HVLPO2, LLC v. OXYGEN FROG, LLC - Before Newman, Moore, and Chen. Appeal from the United States District Court for the Northern District of Florida. Summary: It is an abuse of discretion to permit a witness to testify...more

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

PTAB Strategies and Insights - November 2019: The Board's Reliance on Expert's Conclusory Statements May Not Meet Substantial...

In a recent precedential decision, TQ Delta, LLC v. Cisco Systems, Inc., the Federal Circuit reversed a pair of USPTO inter partes review proceedings that invalidated all claims of two related U.S. patents because “the...more

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