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I was curious about the email one, but "7,536,726" points to a different Microsoft patent (also expired), and I couldn't find a patent with the name "System and method for providing remote access to electronic mail".
What I'm finding (over the last few minutes of experimentation) is that patent references in ChatGPT are valid, but tend to have the wrong numbers associated with them. If you ask it to summarize the claims in a given patent, it will sometimes pull up the wrong patent. Interestingly, you can correct it with a suitable prompt -- see one example at https://i.imgur.com/EQrhFt8.png -- at which point it will do the right thing or at least come close to it.
Anyway, the point stands: there is only so much Google can do to stand up to Microsoft. Royalties in 2013 reached $2 billion ( https://www.businessinsider.com/microsoft-earns-2-billion-pe... ) and it's safe to say they didn't stop filing bullshit patents in 2013.
But do you care to address the actual point, which is still correct even if a few patent numbers are wrong?
Would it have been better not to mention specific patents at all?