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Faegre Drinker Biddle & Reath LLP

Defining the Limits of Lay Testimony in Complicated Products Cases

Faegre Drinker Biddle & Reath LLP on

“So when is a question too complicated for the jury?” That is the question the Third Circuit sought to answer recently in Slatowski v. Sig Sauer, Inc., ___ F. 4th ___, 2025 WL 2178533 (3d Cir. 2025), reversing a district...more

McDermott Will & Schulte

Appeal is too late to raise percolating claim construction dispute

McDermott Will & Schulte on

The US Court of Appeals for the Federal Circuit affirmed a district court’s finding of noninfringement, concluding that the patent owner had improperly raised a claim construction issue for the first time on appeal – an...more

McDonnell Boehnen Hulbert & Berghoff LLP

HVLPO2, LLC v. Oxygen Frog, LLC (Fed. Cir. 2020)

McDonnell Boehnen Hulbert & Berghoff LLP on

Expert witness testimony is a frequent (almost ubiquitous) feature of patent litigation, if only because questions of the state of the art or the understanding of one having ordinary skill in the art are almost always at...more

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