O2Micro Patent Ruled Invalid

Law360, New York (May 16, 2007, 12:00 AM EDT) -- Monolithic Power Systems Inc. won a big victory Tuesday when a jury ruled it did not infringe one of O2Micro International Ltd.’s inverter controller patents.

The jury found that O2Micro’s patent was invalid due to obviousness and on-sale bar, meaning MPS was likely selling the product in question at least a year before the patent filing date.

The jury also found that none of the asserted claims were directly infringed, though it did rule that two of the patent’s claims were infringed under the doctrine of...
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