It's not copyright, it's trademark. It doesn't affect the ability of others to build GPT-like models, but it would prohibit others from calling whatever they bu

It's not copyright, it's trademark. It doesn't affect the ability of others to build GPT-like models, but it would prohibit others from calling whatever they build 'somethingGPT' or 'GPT-5'. And if someone manages to trademark "transformers" (which IMHO is totally unlikely to succeed for multiple reasons), well then we'd shrug and call them something else, that wouldn't prohibit anyone from making or using transformer models.