Everything's patented...
This is one of the reasons I think the next 10-15 years could get interesting. There was a story a couple years back about how a company had failed an appeal against a troll that had a patent which broadly covered distributing digital music. IIRC, the patent was going to expire in 2017. There are a lot of patents like this that have been filed in the 1995-2010 period and I think the more savvy small businesses will begin searching expired patents and making them work for their needs.
"The few practice lawful plunder upon the many, a common practice where the right to participate in the making of law is limited to a few persons." Frédéric Bastiat, The Law.
And, by extension, participation in the legal system.
"The fundamental principle of science, the definition almost, is this: the sole test of the validity of any idea is experiment." -- Richard P. Feynman