The basic MP3 decoding and encoding technology is patent-free in the European Union, all patents having expired there. In the United States, the technology will be substantially patent-free on 31 December 2017 (see below). The majority of MP3 patents expired in the US between 2007 and 2015.
The basic MP3 decoding and encoding technology is patent - free in the European Union , all patents having expired there . In the United States , the technology will be substantially patent - free on 31 December 2017 ( see below ) . The majority of MP3 patents expired in the US between 2007 and 2015 .
What happened to the patents that caused them to be patent-free?
What happened to the patents that caused them to be patent - free ?
expired
expired