The Doctrine of Intervening Rights

A patent is issued for a fixed term–14 years for design patents; 20 years for other types–during which the patent holder has a right to exclude others from making, using or selling the subject of the patent. There are, however, certain circumstances under which a patent claim may become ineffective for the purposes of enforcing Read more about The Doctrine of Intervening Rights[…]

January 2008

The Doctrine of Intervening Rights A patent is issued for a fixed term–14 years for design patents; 20 years for other types–during which the patent holder has a right to exclude others from making, using or selling the subject of the patent. There are, however, certain circumstances under which a patent claim may become ineffective Read more about January 2008[…]