A little late to the party with this — massive online protest currently in process to counter the proposed European software patents directive. Absurd examples of already patented (!) widgets, the patents of which would become enforceable if the Council of Ministers has its way. Build a shopping cart, go to prison. Templates you can slap over your homepage to join the protest.
The only technology on this list that I take exception to is the MP3 codec, which represents thousands of person-hours of intensive R&D.