Probably the majority of patent litigations filed in Florida involve plaintiffs often described as "patent bullies" or "patent trolls." The former typically are companies that use patents solely to corner a market and create a monopoly. The latter typically are "non-practicing entities" holding overbroad patents that flood the market with threatened litigation in order to extract income from licensing deals.
According to a recent article in the Wall Street Journal, it may be better from a cost-benefit analysis simply to resist the troll demand rather than settle.