Red Hat has asked the federal court in the US to limit software patents due to the negative effect on open source development and innovation:
Quote from the Red Hat news page:
Today, Red Hat took a public stand challenging the standards for patenting software. In the Biliski case that is now before the Federal Circuit Court of Appeals, this patent issue is ripe for consideration. In a friend of the court brief submitted to the Federal Circuit Court of Appeals in the Bilski case today, Red Hat describes the special problems that patents pose for open source and seeks modification of the standards for patentable subject matter that take open source into account.