Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
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 . 

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