Republican presidential candidate, real estate mogul, reality television star…There are no shortage of labels for Donald Trump. You can add this to the list: litigious American.

Trump has sued or threatened to sue quite a few people, places and things (i.e. corporations) over his very public career. Here’s a look at a few of his public feuds that ended up in court—or almost did:

Univision, sued in 2015

Trump filed a $500 million lawsuit against the Spanish-language network giant for dumping the Miss USA pageant in June. Univision did so after Trump made insulting remarks about Mexican immigrants. The pageant is part of the Miss Universe Organization, which was a joint venture between Trump and Comcast's NBCUniversal. But in the days after his comments, NBCUniversal announced it was severing ties with Trump as well. Trump has threatened to sue NBCUniversal but has not yet. The fallout was a big blow to the pageant viewership. Trump is suing Univision for defamation and breach of contract.

Media mogul, Merv Griffin, sued in 1988

Donald Trump and Merv Griffin were locked in a legal battle over Resorts International in the late 1980s. Trump wanted to buy up the public shares of Resorts International and take the company private. But Griffin swooped in at the last minute and foiled Trump's plan by offering to buy out all investors, including Trump. Trump sued Griffin. Then Griffin sued Trump in return. Griffin eventually acquired Resorts for $240 million.

Author and journalist, Timothy O'Brien, sued in 2006

Donald Trump sued Timothy O’Brien, author of the 2005 book, TrumpNation: “The Art of Being the Donald,” for reporting his net worth incorrectly according to Trump. O'Brien was slapped with the suit in January, 2006. At issue was how much The Donald was worth. In researching the book, several sources told O'Brien that Trump's net worth was somewhere between $150 and $250 million. Trump claimed at the time that figure was more like $5 or $6 billion. Trump said those low figures cost him business deals and hurt his reputation. A judge dismissed the suit in 2009 saying that O'Brien did not attempt to defame Trump. In 2011, Trump lost an appeal.

Former host of The View, Rosie O’Donnell, threatened to sue in 2006

After Miss USA winner Tara Conner admitting to using drugs, then-co-host of “The View” called Trump a "snake-oil salesman" for not firing her. She also said Trump was bankrupt. That didn't make The Donald too happy and Trump and O’Donnell got in a very public feud. Trump called her "disgusting both inside and out" and told the media he’d sue for making false statements. But he never did.

Miss USA contestant Sheena Monnin, sued in 2012

Miss Pennsylvania Sheena Monnin claimed on her Facebook page that the Miss USA pageant held in May of that year was "fraudulent" and "rigged." Monnin soon after resigned her state crown and Trump’s Miss Universe Organization sued her for defamation saying her words led to the group allegedly losing $5 million in sponsorships. Five months later, she was ordered to pay Trump $5 million in damages. Monnin turned around and sued her own legal team for malpractice.

Comedian Bill Maher, sued in 2013

Trump filed a $5 million lawsuit after Maher didn’t follow through on what Trump said was a bet made on “The Tonight Show.” After Trump’s very public scrutiny and alleged investigation into President Obama’s birth and school records, Trump said he would donate $5 million to charity if the president would release all of his personal documents to the public. In an appearance on the late night talk show, the liberal comedian Maher in response joked that he’d give $5 million to Trump if he could prove that his father was not an orangutan. Trump gave Maher a copy of his birth certificate but he didn’t pay up. Trump sued him for $5 million but later dropped the suit.

And Trump’s even sued himself…kind of…

Trump and Trump Entertainment Resorts, sued in 2014

Trump filed suit against the company he still has a 10% stake in last year. He believed the Trump brand name was too good for the Atlantic City casino that was once his crown jewel but had recently gone bankrupt. But then billionaire Carl Icahn swooped in and saved the casino which entered a bankruptcy restructuring plan. Trump later dropped the lawsuit in a bankruptcy court deal in early 2015, according to The Wall Street Journal. The Trump Taj Mahal brand remains.

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