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McDermott Will & Emery

Equivalence Requires Element-by-Element Proof With Linking Argument

McDermott Will & Emery on

The US Court of Appeals for the Federal Circuit affirmed a district court determination that a patent owner had not provided the “particularized testimony and linking argument” required to demonstrate equivalence under the...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

Recent Trends on the U.S. Doctrine of Equivalents

Sterne, Kessler, Goldstein & Fox P.L.L.C. on

U.S. courts have long recognized that a product or process which does not literally infringe a patent can nevertheless infringe under the "doctrine of equivalents" if it is equivalent to the claimed invention. The percentage...more

Foley & Lardner LLP

Court Questions Applicability of Function Way Result Test In Chemical Cases

Foley & Lardner LLP on

In Mylan Institutional LLC v. Aurobindo Pharma Ltd., the Federal Circuit reviewed a preliminary injunction based in part on a finding of likelihood of success in establishing infringement under the doctrine of equivalents....more

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