insubstantial difference

The Doctrine of Equivalents Fails to Save Patent Infringement Suit: Ethicon Endo-Surgery, Inc., et al, v. Covidien LP

Following a bench trial, the District Court of Massachusetts held that Ethicon’s “shepherd’s hook” design for finger actuation of a forceps is not equivalent to a “finger loop” claimed by Covidien’s patent no. 9,241,… Read More