Donald Trump said he would reopen Trump University. | Getty Trump: I'll reopen Trump University after I win

Donald Trump on Thursday vowed to reopen Trump University, the beleaguered real estate seminar business that is the target of multiple lawsuits and has become a new favorite attack line for Hillary Clinton.

"After the litigation is disposed of and the case won, I have instructed my execs to open Trump U(?), so much interest in it! I will be pres." Trump tweeted Thursday.

Advertisement After the litigation is disposed of and the case won, I have instructed my execs to open Trump U(?), so much interest in it! I will be pres. — Donald J. Trump (@realDonaldTrump) June 2, 2016

Despite Trump University being the subject of two class-action lawsuits and a $40 million lawsuit from New York Attorney General Eric Schneiderman, Trump has previously expressed interest in reopening the business, either running it himself or at the charge of his adult children within the Trump Organization.

The latest declaration follows days of negative coverage of Trump's role in the business, exacerbated by reams of unsealed court documents that the presumptive Republican nominee's legal team had sought to keep from public view. U.S. District Court Judge Gonzalo Curiel, who has faced the wrath of Trump on Twitter and on the campaign trail, on Tuesday evening tried to re-seal certain documents that had been "mistakenly" released, but are in the possession of numerous news organizations, including POLITICO.

"Even though I have a very biased and unfair judge in the Trump U civil case in San Diego, I have thousands of great reviews & will win case!" Trump tweeted earlier Thursday.

Trump has also sought to counter the streams of negative headlines from former employees and customers who claim Trump University amounted to little more than a scam. The candidate's campaign released a video on its official YouTube channel Wednesday featuring three former clients of Trump University discussing how attending the seminars helped them in their subsequent business forays.

Trump's defiant tone comes on the same day that Eric Schneiderman appeared on two national morning shows to tear into the business as "really a fraud from beginning to end" and "straight up fraud." It also comes on the same day Clinton, his likely general election opponent, is delivering a speech ripping into his qualifications on foreign policy and has augmented her argument against Trump in recent days by attacking him as a "fraud" and a "con" for "trying to scam America the way he scammed all those people at Trump University."

It is not clear what role, if any, Trump would play in such a future venture, or what it would be called. Trump University was renamed Trump Entrepreneur Initiative in 2010 after authorities warned the business that the prior name was misleading. It largely went defunct in 2011 as complaints and lawsuits started piling up. "Tweets speak for themselves," spokeswoman Hope Hicks said in an email, when asked to clarify Trump's role.

"People are interested in it," national spokeswoman Katrina Pierson told CNN on Thursday, adding that Trump's children would be in charge of it. "A lot of people do want to hear what Mr. Trump feels about real estate because he's been so successful and when this is over, Mr. Trump is considering reopening the university."