The document discusses the doctrine of equivalents in patent law. The doctrine allows a court to find infringement even if the accused device does not literally infringe a patent claim, if it is equivalent to the claimed invention. It provides that an equivalent device performs substantially the same function in substantially the same way to achieve substantially the same result. The doctrine balances protecting patent holders' inventions with providing clear notice of a patent's scope.

1. DOCTRINE OF EQUIVALENTS FILMA VARGHESE TRADE MARK DEPARTMENT

7. FLOW DIAGRAM OF PATENT INFRINGEMENT ENQUIRY