( November 13, 2025, 2:38 PM EST) -- WASHINGTON, D.C. — A Texas federal judge erred in finding that claims in an oil technology company’s patent describing a tool used in oil wells were invalid as indefinite, a Federal Circuit U.S. Court of Appeals panel held Nov. 12; the panel found that the judge was wrong to reject the patent holder’s argument that the representative claim contained a “‘clear clerical’” error that the company argued was obviously corrected elsewhere in the patent in a way that would have been understood by a person of skill in the relevant art....