Revisiting Hindsight Bias: Mintz v. Dietz & Watson

In Mintz v. Dietz & Watson, an opinion penned by Chief Judge Rader, a three judge panel that also included Circuit Judges Newman and Dky strongly admonished against the use of impermissible hindsight towards a finding of obviousness. Despite finding that the accused products did not infringe and following a comprehensive analysis of hindsight, the CAFC further held that U.S. Patent No. 5,413,148 (the “‘148 Patent”) was not invalid under § 103.