I'm cackling, "bankrupting the Swiss Railway"Brand reputation : that is apples problem,
Not the legal fight. If what you said were to play out and the guy was right and apple defeated him by destroying him financially..... the press would have a field day.
Apple also could have sent the Swiss railway bankrupt through an intensive battle, they killed it ASAP for brand reputation purposes.
Apple is going to settle very fast and the guy is going to make so much more than offered initially....if it's about the money.
Swiss chauvinism aside, here a few comments. On "small guy v Big Corp", although I understand the feeling of injustice, many American scholars in economic analysis would tell you that having one big company using the name "Animoji" is more efficient than a small business hogging it forever with a dead app virtually used by no one.
Regarding the name issue, from what I know about UCC art. 9 (not the same issue at all, but also with filings), I'd not be surprised if the court took an extremely formalistic approach and require the name to be exact. If the name isn't exactly correct, your filing would be void under UCC 9, so I'd wager that it could be the same for a patent.
I'm pretty sure Apple's lawyers aren't entirely incompetent and therefore knew all that from the beginning and factored in that developers refusal. They'll very probably settle this, he'll be paid and Apple will gladly use the Animoji name.