PHOTO FILE: Sean Rad, CEO of Tinder, during the celebration of the IPO of Match Group on the NASDAQ Stock Exchange, in New York on November 20, 2015. REUTERS / Lucas Jackson

(Reuters) – Online dating service Match Group Inc. (MTCH.O) and parent company IAC / InterActiveCorp (IAC.O) filed suit against Sean Rad, co-founder of Match Group's popular Tinder dating service , for secret copy company files and other proprietary information.

The lawsuit, filed Tuesday in New York State court in Manhattan, comes six months after Rad and other co-founders, executives and first employees of Tinder sued IAC, accusing him of To have undervalued Tinder for not paying them billions of dollars.

The suit claims at least $ 250 million in damages, which, according to Match and IAC, represented "the portion of the equity compensation Rad had received, but which he was not entitled to because of his reprehensible act ".

In the complaint, IAC and Match alleged that in violation of a work contract, for several years, Rad had created internal email backups, forwarded e-mails from company to a personal e-mail address and copied directly from the company's files containing "extremely sensitive and non-public information about strategies and projects of its employers. "

Orin Snyder, a lawyer for Rad, who lives in Los Angeles, said in a statement that the lawsuit was "ridiculous" because Rad's employment contract allowed him to save his email.

"Do IAC and Match really think the jury will not understand this desperate act of retaliation?" Said Snyder.

The lawsuit filed by Rad and others against IAC and Match, which was filed in August, also before a court in the state of New York in Manhattan, alleged that the companies had deliberately undervalued the company. Tinder dating application to limit the amount of their earnings by exercising stock options.

IAC and Match denied the allegations, claiming in a document filed in October that Rad was closely involved in determining Tinder's assessment that he was challenging in court.

Report by Jan Wolfe; Edited by Frances Kerry and Leslie Adler

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