Chinese Huawei made a deal with the patent consortium Rockstar to avoid a lawsuit for unauthorized use of patents. This is the first of eight device manufacturers with Android which has decided he does not want to be involved in a lawsuit.
Google began their defense from Rockstar. They claim that Android does not infringe patents for which they are targeted by patent consortium Rockstar who is backed by giants like Microsoft and Apple. According to Rockstar, Android violates several patents for which they are claiming the rights, and besides Google in the lawsuit, there are seven of the company's partners, including Samsung and HTC.
There is a phrase in the patent world that used to mean something, but now seems to have lost its meaning: prior art. The term according to Miriam Webster means: “the processes, devices, and modes of achieving the end of an alleged invention that were known or knowable by reasonable diligence before and at its date —used chiefly in patent law”. To put it simply prior art is any technology, device, papers, theory, etc. that was publicly known at the time of “invention” and before the patent filing which could have influenced (or actually did) the inventors.