Until we succeed in eliminating all patenting of software, we must try to overturn individual software patents. This is very expensive and can solve only a small part of the problem, but that is better than nothing.
Overturning patents in court requires prior art, which may not be easy to find. The League for Programming Freedom will try to serve as a clearing house for this information, to assist the defendants in software patent suits. This depends on your help. If you know about prior art for any software patent, please send the information to the League at the address given above.
If you work on software, you can personally help prevent software patents by refusing to cooperate in applying for them. The details of this may depend on the situation.