The MPEG-2 Patent Portfolio License as of April 1, 2013. http://www.mpegla.com/main/programs/m2/Documents/m2-att1.pdf http://www.mpegla.com/main/programs/m2/Do

The MPEG-2 Patent Portfolio License as of April 1, 2013. http://www.mpegla.com/main/programs/m2/Documents/m2-att1.pdf http://www.mpegla.com/main/programs/m2/Documents/m2-att1.pdf. $ grep -E '^[A-Z]{2} [0-9P]' pat_mpeg2.txt | wc -l 1033 $ grep -i Expired pat_mpeg2.txt | wc -l 579 $ grep -i Expires pat_mpeg2.txt | wc -l 50 The MPEG-4 Visual Patent Portfolio License as of April 1, 2013. http://www.mpegla.com/main/programs/M4V/Documents/m4v-att1.pdf http://www.mpegla.com/main/programs/M4V/Documents/m4v-att1.p... $ grep -E '^[A-Z]{2} ' pat_mpeg4v.txt | wc -l 1297 $ grep -i 'Expired' pat_mpeg4v.txt | wc -l 178 $ grep -i 'Expires' pat_mpeg4v.txt | wc -l 22 The MPEG-2 Systems Patent Portfolio License as of April 1, 2013. http://www.mpegla.com/main/programs/m2s/Documents/m2s-att1.pdf http://www.mpegla.com/main/programs/m2s/Documents/m2s-att1.p... $ grep -E '^[A-Z]{2} ' pat_mpeg2s.txt | wc -l 240 $ grep -i 'Expires' pat_mpeg2s.txt | wc -l 1 $ grep -i 'Expired' pat_mpeg2s.txt | wc -l 48 The MPEG-4 Systems Patent Portfolio License as of April 1, 2013. http://www.mpegla.com/main/programs/M4S/Documents/m4s-att1.pdf http://www.mpegla.com/main/programs/M4S/Documents/m4s-att1.p... $ grep -E '^[A-Z]{2} ' pat_mpeg4s.txt | wc -l 68 $ grep -i 'Expires' pat_mpeg4s.txt | wc -l 0 $ grep -i 'Expired' pat_mpeg4s.txt | wc -l 14 The AVC (h.264 - MPEG_LA) Patent Portfolio License as of February 1, 2013. http://www.mpegla.com/main/programs/avc/Documents/avc-att1.pdf http://www.mpegla.com/main/programs/avc/Documents/avc-att1.p... $ grep -E '^[A-Z]{2} ' pat_mpeg_h264.txt | wc -l 2958 $ grep -i 'Expires' pat_mpeg_h264.txt | wc -l 4 $ grep -i 'Expired' pat_mpeg_h264.txt | wc -l 109 Though these are the patent pools available for licensing from MPEG_LA, I haven't deduped the lists, and I'm sure there are some duplicates. I'm mostly looking for rough numbers. I'm not trying to pick on MPEG_LA, but they just happened to be first on the list.