Patent demand letters

Patent demand letters are stressful. Before responding or ignoring, evaluate infringement, patent prosecution history, ownership, and litigation history.

Common law trademarks

Common law trademarks

Think that a Federal US trademark applies throughout the US? Not always. Welcome to the murky world of common law trademarks. Under … Read more

Sending Alice to Planet Blue

Forget “patent invalid because abstract”, the Planet Blue decision finds the real issue is “preemption.” Non-preemptive software claims are not abstract. In … Read more