[MPEGIF Discuss] Is it possible to create a free software, or open source or public domain implementation of AVC ?

[Hilton Garcia Fernandes]

Dear all,
Since i'm no lawyer and not even familiar with intelectual property questions, 
i ask you to please answer me the long question in the Subject:
Is it possible to create a free software, or open source or public domain 
implementation of AVC ?
I mean is it true that due to patent/licensing, every non commercial 
implementation of AVC is precluded ?
I look forward 
-- 
Hilton Garcia Fernandes <hgfernan lsi.usp.br>
Núcleo de Tecnologias sem Fio (Wireless Technologies Team) 
LSI - Escola Politécnica - USP 
tel.: (11)3091-5589 
cel.: (11)8131-5213
Av. Prof. Luciano Gualberto, 158 trav. 3 
CEP 05508-900 -- S. Paulo -- SP -- Brazil
Home Page: http://www.lsi.usp.br/~hgfernan