It has now officially been decades since I read this book, which was around the time that I posted this article. I did see a lot of her work in ad school, and her a lot of legendary stories about pitches and campaigns, but reading all of these stories in her own words was even better.

For blogs on the topic of IP and copyright in creative businesses, try keeping up with Likeliehood of confusion, and Musictech.solutions, also the trichordistis also interesting but from a musician/artist standpoint and not a legal blog. As for this specific case, I'm afraid I do not know a better resource than the one you mentioned. It can still be read via the waybackmachine.org FYI

OKAY HOLD UP, WAIT - I have a vague memory of this ad now too. I know Orange did a thing talking about time (and space and babies) as their launch ad, but that was certainly not the eighties. It's possible the Orange ad was referencing the BT ad.