STMicroelectronics (AST group)
http://www.st.com/
and INRIA (Planete research team)
http://www.inria.fr/
LDPC Application Level FEC (AL-FEC) page.
To the best of our knowledge, our codec does not infringe any patent. In particular it does not use any of the claims specified in the following Digital Fountain US Patents: #6073250, #6081909 and #6163870. If ever you disagree, please let us know so that we can see how to address the problem!
We are currently very active in various standardization organizations (IETF RMT and DVB-H in particular) to promote the use of these codes. More information can be found in LDPC FEC Document.