80% of MS Server Protocols Are Unpatented
perlow writes "ZDNet blogger Jason Perlow and Centrify's Tom Kemp discover that 80 percent of all Microsoft server protocols are un-patented. What exactly then, did SAMBA license? Are Microsoft's patent and intellectual property threats simply the growls of a paper tiger?"
...and despite repeated requests, they won't tell you which one actually is patented. They will only say that you have infringed upon it.