On March 28th, Donald Trump filed a formal opposition before the USPTO Trademark Trial and Appeal Board (TTAB), opposing a trademark application by his ex-wife, Ivana Trump. The trademark application at issue is serial no. 78/486,404, a standard character mark intent-to-use application for "IVANA TRUMP" filed by Ivana Trump on September 20, 2004, for use with "real estate services" including "real estate development" and "real estate advertising services." Donald Trump, in his opposition, referred to several of his federally registered trademarks, including "TRUMP TOWER", "TRUMP PALACE", and "TRUMP PARK AVENUE", and stated that he "has been using the name and trademark TRUMP in connection with a multitude of high-profile real estate projects." The opposition further states that the proposed mark "is confusingly similar to Mr. Trump's numerous, distinctive, and famous TRUMP marks," and that "due to the extensive fame and renown of Mr. Trump's TRUMP mark, concurrent use of the mark IVANA TRUMP by Applicant and TRUMP by Mr. Trump in the identical field of real estate services would likely result in consumer confusion…and, therefore, Mr. Trump is likely to be damaged by registration of Applicant's proposed mark." An answer was filed by Ivana Trump on April 28, 2006, generally denying the allegations in the opposition, but also (1) admitting that Donald Trump "is engaged in the business of real estate development", and (2), averring that "no "mark TRUMP", which is primarily merely a surname, is owned by Opposer."

Full Opposition and Answer Text: LINK
"IVANA TRUMP" Application Information: LINK