I'm sorry but if the guy went to law school, I'm sure he could figure the basics out of legal research and one would think he would take the time to do that research if someone told him (and I'm sure they did) that he might be on shaky legal ground. Unless his ego got in the way.
Sometimes it's not just about research.
I've been in practice for 17 years and I can tell you that not only do you have to keep yourself abreast of changes in the law and the latest authorities throughout, but as a litigator you get a feel for tactics, the court and the way parties behave. Not only is Peters totally bereft of even a day of experience, but he's likely not to have given a crap about or even remember what he learned some 35 years ago. Hell, intellectual property law isn't a core subject of most legal courses so I doubt he even studied it in any depth.
You afford him too much credit. I've seen people who has been in practice for years who still don't have a clue of it's not their area of practice.