[lagniappe]

I'm curious what the legal precedent on this. If intellectual property, concepts, lore, can be protected, does this person have a claim here even though they didn't write the code? Is there a statutory norm for percentages in cases like these?

This has to be terrible for small dev shops to face, I'd imagine enough litigating and good projects just fold up shop unable to afford their own defense cost.

[ww520]

In general ideas are not copyrightable. Expression of ideas are copyrightable.

Anyone can sue you for whatever reason. The court can throw the case out but it’s a nuisance to you.