Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
the oculus marks and those of its affiliates may not be copied , imitated or used , in whole or in part , without prior written permission , including as authorised by any applicable brand guidelines . 

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