The evidence suggests that in the software industry, the patent system does more to hinder innovation than to reward it. Inventors spend more money defending themselves against patent lawsuits than they earn from patent royalties. More and more entrepreneurs are losing sleep about the risk that patent litigation will drive them into bankruptcies. And companies that traditionally haven’t had to worry about the patent system, like restaurants, grocery stores, and casinos, are facing demands from trolls over dubious patents, most of which involve software.

via The Supreme Court doesn’t understand software, and that’s a problem – Vox.