The Federal Circuit limited “comprising tungsten” to elemental tungsten based on the specification, affirming the PTAB’s obviousness ruling despite the construction error. Read More
The Federal Circuit ruled that a patent need only describe what is claimed, reversing a written-description invalidity finding in litigation over Entresto. Read More
The Federal Circuit held that a detailed commercial “quotation” letter constituted an invalidating offer for sale under pre-AIA §102(b), clarifying on-sale bar standards. Read More