In a recent precedential decision from the Federal Circuit, the appellate court explained that words of approximation like “about” are not inherently definite or indefinite — but when a patentee fails to provide sufficient guidance as to the meaning of such terms, it can be fatal to the claims. More specifically, in Enviro Tech Chemical
Last week, in Personalized Media Communications, LLC v. Apple, Inc., the Federal Circuit left intact Judge Rodney Gilstrap’s ruling of unenforceability based on prosecution laches and deprived Personalized Media Communications, LLC — a nonpracticing entity — of a paycheck from Apple. At a high level, PMC appealed a final judgment of the U.S. District