In March 2018, Match Group filed a patent infringement lawsuit against Bumble, accusing the startup of copying Tinder's technology, particularly its design and the process for matching users. The suit also alleged that Gulzcynski and Mick stole confidential information from Tinder.
A few weeks later, Bumble filed a $400 million lawsuit of its own, accusing Tinder of copying its core feature that required women to make the first move, which Match Group CEO Mandy Ginsberg had previously said Tinder was planning to introduce.
Bumble claimed in its suit that Match Group used the acquisition talks to improperly obtain proprietary information about the company and used the lawsuit to make Bumble look less attractive to other potential buyers.
The two companies reportedly tried, unsuccessfully, to settle. In September of that year, Bumble announced it was taking Match Group to court as well as preparing for an initial public offering.
In June 2020, Match Group and Bumble announced that they had settled all litigation between them. Details of the settlement weren't disclosed, but both companies said they were "pleased with the amicable resolution."