Grumpy Old Geeks Topics MP3 patent expiration Topic MP3 patent expiration 3 mentions in 1 episode The hosts reject claims that the expiration of an MP3 patent means the format is disappearing. Mentions 210: Beyond Burgerdrone May 22, 2017 1:22:17 we're saying goodbye to MP3 1:22:46 the patent has expired 1:23:16 the entire podcast industry is built on MP3