The key phrase is "supposed to be"; "are not supposed to be patentable" does not imply "are not patented" in a system where patent examiners usually have very l

The key phrase is "supposed to be"; "are not supposed to be patentable" does not imply "are not patented" in a system where patent examiners usually have very little idea what they're actually warding patents for and legal fees for challenging invalid patents are prohibitively high.