He then took the office to court in 2014 for refusing to grant him the right to register "Trump" as a trademark in areas of "commercial, residential and hotel real estate construction" and "information services in commercial, residential and hotel real estate construction".
The Beijing No 1 Intermediate People's Court found in favor of the Trademark Office so Trump took his case to the city's highest court last year.
Just two days after Trump announced his candidacy for the US presidential election in June, 2015, he struck out again. The Beijing Higher People's Court ruled against him and ordered him to pay 200 yuan (HK$227) to cover the court's costs.
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But Trump has managed to trademark many variations of his name on the mainland, including "Trump Tower" for hotels and catering, "Trump Estates" for real estate management and "Trump Home" for furniture. But numerous mainland firms have also taken advantage of the president-elect's name, including a Shenzhen firm making high-end "Trump Toilets."
Yet it seems Trump's surprise election win has begun to make a difference with the country's trademark officials.
His application for a similar trademark in the same categories as before — with the only difference being the capitalized name, "TRUMP," was filed on March 20, 2014, and provisionally approved on Sunday, four days after his win, according to the government-run trademark search system.
The Trademark Office declined to comment on Monday.