Filed by U.S. agricultural firm Monsanto, a bio patent for a swine breeding process provoked the rally. A letter with more 5,000 signatures ended up at the patent office (EPO) in Munich in form of a protest march. Representatives from farmers' unions, Greenpeace, the Misereor development corporation of German Catholic bishops, other religious groups, and Richard Stallman attended the rally in the Marienplatz. Stallman spoke out on behalf of the German FFII about the shared interests software developers have with pig farmers: "Patents on plants and animals attack farmers as they do their work. Software patents attack developers as they do their work."

Unrest at the European Patent Office: FFII activists, Richard Stallman and pig farmers unite against genetic modification and software patents.

The pioneer of free software and founder of the FSF considered everyone to be affected by software patents: "Only a fraction of the businesses are farmers, but certainly most companies use computers, and they all are in danger." To clarify, he used the analogy of music composition, where composers write notes and implement pre-existing ideas with original ones in their works, much as programmers do with code. Stallman: "Even a Beethoven can't reinvent music from zero and make something people will listen to. Nobody is such a genius that he could reinvent computing from zero." Accompanied by applause, he characterized the EPO as a "corrupt, malicious organization" and implored everyone not to shy away from eliminating it altogether. He exhorted Europeans, "Every institution gets the respect it deserves."

Prior to Stallman's speech the Bavarian environment minister Markus Söder made a surprise appearance at the microphone. A member of the CSU party, he was greeted with jeers, but his avowals seemed to fit the occasion. He praised the recent decision by agriculture minister Ilse Aigner (of his own party) to ban cultivation of genetically modified (GM) corn and denounced the Monsanto patent: "Yes to life, no to patents" was his rhetoric. Later speakers, such as European Parliament member Friedrich-Wilhelm Graefe zu Baringdorf, got to the crux of the matter: "Keep in mind, European elections are just around the corner." He and speakers from the other organizations emphasized persistence when words aren't immediately followed by actions.