In 2013 the number of patent litigation lawsuits filed in U.S. district court rose yet again, demonstrating that companies will do whatever it takes to protect their intellectual property. And nonpracticing entities, commonly referred to as patent trolls, played a hefty hand in that increase.

All this meant plenty of work for the law firms chosen to file or defend patent suits. To find the firms with the biggest dockets, each year our sibling publication Corporate Counsel ranks law firms according to how many federal district court patent suits they handled in the previous year.