US President Donald Trump could be about to launch a mobile network in the US – alongside branded phones and accessories – after a number of trademark filings were spotted with the US Patent and Trademark Office last week.

Trump is no stranger to attaching his name to merchandising, both before and after his presidential runs. He is estimated to have made over $10m in the last year selling Bibles, watches, trainers and guitars with his name branded on them. But the most profitable venture in recent times has been the launch of the Trump cryptocurrency, which proved controversial after its price briefly surged and then crashed dramatically, leaving many holders of the coin out of pocket.

Now patent attorney Josh Gerben has found that DTTM Operations LLC, the entity that manages Donald Trump’s trademarks, has filed two new applications with the US Patent Office for the marks ‘TRUMP’ and ‘T1’. He said the filings suggest plans to launch a Trump-branded mobile phone and a wireless service that...