News & Analysis as of

Apportionment Patent Litigation Evidence

McDermott Will & Schulte

Tree-mendous award: Damages expert royalty opinions are lit

The US Court of Appeals for the Federal Circuit affirmed a damages verdict amounting to tens of millions of dollars. The Court found that the patentee’s damages expert correctly apportioned value to the patented feature and...more

White & Case LLP

Federal Circuit Says Where Expert Evidence is Insufficient, Patent Damages Can Be Nominal

White & Case LLP on

On October 2, 2025, in Rex Medical, LP v. Intuitive Surgical, Inc., Nos. 2024-1072, 2024-1125, the U.S. Court of Appeals for the Federal Circuit affirmed a district court's preclusion of Rex's patent damages expert from...more

McDermott Will & Schulte

Damage Expert Testimony Excluded for Failure to Disclose Evidence and to Apportion

The US Court of Appeals for the Federal Circuit affirmed a district court’s decision to preclude a damage expert from characterizing license agreements and opining on a reasonable royalty rate where the sponsoring party...more

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