Apple approached the European Telecommunications Standards Institute (ETSI) in November seeking clarification on what it says is a lack of "consistent policy" on how manufacturers can license and set royalty rates on patents used by mobile devices. The tech giant, which has been sued and is suing several companies worldwide over patent issues, called for ETSI to develop clear, transparent rules and policy particularly with regards to so-called FRAND licensing, which in several cases is the core of Apple's argument, reports The Wall Street Journal.