I'm talking about using them now, not in the past when they were licensed at the time. A new Trek series can't use one of FJ's designs because they'd have to get permission from his estate and make royalty payments, right? And they couldn't use, say, the character of Koren Anastas from the FASA book for the same reason, yes?
Pretty sure once it's published, CBS owns it lock, stock and barrel. Contracts the writers of the books sign is far different than the contracts signed by those writing episodes.
