FOSS Patents is a blog by Florian Mueller that:
"[C]overs how software patents threaten free and open source software (FOSS) and what action can be taken to deal with the threat."
As Florian Mueller writes:
"Florian Mueller is a software developer and government affairs professional. In 2004, Florian founded the NoSoftwarePatents campaign, which contributed to the European Parliament's rejection of a proposal for European software patent legislation."
This looks like a very useful blog for patent-interested readers.