How does Twitter handle username changes involving trademarked names?

Twitter has a policy regarding the use of trademarked names as usernames. If a username infringes on a trademark, Twitter may suspend the account or require the user to change the username.

Twitter's trademark policy states that they do not mediate trademark disputes, but they will respond to notices of alleged trademark infringement that comply with the Digital Millennium Copyright Act (DMCA). If a trademark owner believes their trademark is being infringed upon, they can file a report with Twitter.

However, if the username is not clearly infringing on a trademark, Twitter may not take action. If a user changes their username to one that was previously used by someone else, including a trademarked name, Twitter may not intervene unless they receive a valid complaint from the trademark owner.

It's important to note that Twitter's policies can change and may vary depending on the specific circumstances. If you have a concern about a specific username on Twitter, you should review their current policies or consider consulting with a legal professional.