One of the patents they tried to monetise came from Nokia (filed 2008, granted 2010), was transferred to France Brevets (2013), who in turn transferred it to Burley Licensing LLC, Texas (2021), who in turn moved it to Nimitz Technologies LLC, Texas, 14 days later which finally sued 11 companies for patent violation. They didn't succeed in court. The patent is US 7,848,328 B2 and the claims are as vague as you would expect ;)
https://patentimages.storage.googleapis.com/8e/a9/d6/b55ae845972bfb/US7848328.pdf