As someone who spent many years doing yoga to attempt to improve my 2 sigma godfawful flexibility (not very successfully alas), I saw all sorts of misbehavior going on. Some examples:

http://www.huffingtonpost.com/2013/08/05/bikram-yoga-lawsuit...

http://www.gtweekly.com/index.php/santa-cruz-news/santa-cruz...

And this not the first time IP Law has come into play here:

http://abcnews.go.com/International/story?id=3200043