Since Mr. Garcia explicitly acknowledges Paramount's trademarks, and that the plaque is a derived work, I think they're more likely to go after Fox who do not acknowledge their trademark, as they are an actual threat to keeping it.

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‘To those who regard “crime fiction” as some sacred icon which must follow a rigid formula, I will always be the man who writes 18-syllable haiku.’Trying to make sense of computers, The Error Log.