reasonable uncertainty

Shutterstock_98079497Patents require definiteness

The U.S. Supreme Court has tightened the test for whether a patent "particularly point[s] out and distinctly claim[s] the subject matter which the applicant regards as [the] invention." 35 U.S.C. § 112, ¶ 2.

The Federal Circuit (which handles all appeals from district courts on patent matters) had interpreted the statute to