I or We Claim

The Claim section begins with one of three phrases: "I claim" or "We claim" or "What is claimed is". This is mostly a matter of preference, although the first and second choices depend on the number of inventors, and can become incorrect over time if that number changes through claim amendments. I prefer the third choice ("What is claimed is") because it is invariably correct. Patent attorneys have enough to think about without wasting time on such trivialities.