Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
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all other trademarks , service marks , logos , trade names and any other proprietary designations are the trademarks or registered trademarks of their respective owners and may not be used without permission of the applicable trademark holder . 

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. OPTIONS: ["Contract by using", "Limitation of liability", "None", "Choice of law", "Jurisdiction", "Unilateral termination", "Unilateral change", "Content removal", "Arbitration"].