Gramm v. Deere (Fed. Cir., March 11, 2026) 2024-1598

This episode concerns a Federal Circuit opinion about a patent dispute between Richard Gramm and Deere & Company. The United States Court of Appeals for the Federal Circuit reviewed a lower court's decision that had declared certain patent claims invalid as indefinite. Specifically, the case focuses on a "control means" limitation in a patent for a crop harvester designed to maintain a consistent header height. The appellate court reversed the invalidity judgment, ruling that the district court erroneously excluded a non-microprocessor controller from the list of adequate structures. Because this logic circuitry provided a sufficiently definite structure for the claimed function, the court determined the patent was not indefinite and remanded the case for further litigation.

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