In the states, you have up to a year to file a patent for a product that has been released to the public domain. Of course, generally you file before you release it. For foreign patents, I believe you can't apply once its been released. And if multiple applications are filed, first one in wins. _________________________________________________________________ MSN 8 helps eliminate e-mail viruses. Get 2 months FREE*. http://join.msn.com/?page=features/virus -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics