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 . 

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