The Software Freedom Law Center (SFLC) has filed a copyright infringement lawsuit against Verizon on behalf of the two principal developers of BusyBox, alleging violation of the GPL V2. BusyBox is a lightweight set of standard Unix utilities commonly used in embedded systems and is open source software licensed under GPL version 2.
An Information Week article says that:
The case against Verizon, however, marks the first time SFLC has sought to defend the GPL in court against a multibillion dollar industry giant. As such, it could provide a key test of the legal validity of the GPL -- a license that's used by thousands of open source developers. Some companies, includingMicrosoft (NSDQ: MSFT), have said they believe parts of the GPL are not legally enforceable.