Case: Patents/Anticipation & Obviousness (P.T.A.B.)

The Patent Trial and Appeal Board determined that challenged claims of Monolithic Power Systems Inc.'s patent that relates to a pseudo constant on time control circuit and step-down regulators using it are unpatentable as anticipated by and obvious over prior art, in an inter partes view by Reed Semiconductor Corp. The board determined that the challenged claims are anticipated by and obvious over prior art that discloses that the switching frequency is controlled by a switching controller in the DC to DC converters based upon feedback from the switching node without a direct connection to the output node, and that ...