Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
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other trademarks , product , and service names and company names or logos mentioned on the fitbit service are the property of their respective owners and may not be copied , imitated or used , in whole or in part , without the permission of the applicable trademark holder . 

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