E. I. Du Pont De Nemours & Co. v. Ladd

JACKSON, District Judge.

This action was filed pursuant to Title 35 U.S.C. § 145 seeking judgment authorizing the defendant, Commissioner of Patents, to issue Letters Patent containing claims, 2, 3, 4, 7, 8 and 9 of application Serial No. 682,325, filed September 6, 1957, entitled “Polyoxymethylene Dieth-ers”. This application was assigned to the plaintiff, E. I. Du Pont De Nemours & Company, by the inventors Northrop Brown, William Philip Langsdorf, Jr., and Carl Earle Schweitzer.

Claims 2, 3 and 4 define a new composition of matter, namely, polyoxymethylene dialkyl ethers, and claims 7, 8 and…