MP3
In September 1998, the Fraunhofer Institute sent a letter to several developers of MP3 software stating that a license was required to "distribute and/or sell decoders and/or encoders". The letter claimed that unlicensed products "infringe the patent rights of Fraunhofer and Thomson. To make, sell and/or distribute products using the [MPEG Layer-3] standard and thus our patents, you need to obtain a license under these patents from us."
What does selling unlicensed products mean that the seller is doing?
infringe the patent rights of Fraunhofer and Thomson
The letter claimed that unlicensed products "infringe the patent rights of Fraunhofer and Thomson.
unlicensed products