On2's patents: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.htm&r=0&p=1&f=S&l=50&Query=AN%2F%28%28%22Duck

On2's patents: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.htm&r=0&p=1&f=S&l=50&Query=AN%2F%28%28%22Duck+Corporation%22+OR+On2%29+ANDNOT+Green%29%0D%0A%0D%0A&d=PTXT http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sec... MPEG's patents (pdf, sorry): http://www.mpegla.com/main/programs/avc/Documents/avc-att1.pdf http://www.mpegla.com/main/programs/avc/Documents/avc-att1.p... enjoy