Patent Case Watch

Patent opinions from the Eastern District of Texas and the U.S. Court of Appeals for the Federal Circuit

Fed. Cir.

Grace Instrument Industries, LLC v. Chandler Instruments Company, LLC, No. 21-2370 (Fed. Cir. Jan. 12, 2023)

Affirmed in Part
Claim Construction Indefiniteness
Court
U.S. Court of Appeals for the Federal Circuit
Case No.
No. 21-2370
Decided
January 12, 2023
Judge
Chen, J.
Document
Precedential Opinion
Length
23 pages

From the Opinion

The passage below is extracted verbatim from the opening of the document. It has not been editorially summarized — consult the full opinion for the court's complete reasoning.

Grace Instrument Industries, LLC (Grace) appeals a claim construction order issued by the United States Dis- trict Court for the Southern District of Texas finding the term “enlarged chamber” indefinite and construing the term “means for driving said rotor to rotate located in at least one bottom section.” As a result of the district court’s order, the parties stipulated that asserted claims 1, 2, 4, 5, 7–9, 11, 14, 15, and 17 of U.S. Patent No.

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Source: govinfo.gov USCOURTS collection · retrieved July 23, 2026 · Report an error