Usually, the first thing an alleged patent infringer will receive is some kind of demand or cease and desist letter from a third-party ostensibly describing that party’s claims. The practical reality is that most patent infringement demand letters, especially by those considered “trolls,” are often vague, misleading and incomplete. While short on substance and detailed allegations of infringement, many of these letters will, however, contain claims for lump-sum payments or warn a party can avoid litigation by entering a license agreement. On July 1, 2015, the Patent Troll Prevention Act, F.S. 501.991, went into effect. The law is intended to address patent infringement demand letters and bad-faith patent litigation.