Match Group Settled intellectual property litigation against TanTan,

which will result in both a redesign of their U.S. app and annual royalty payments tied to the size of their U.S. userbase, reinforcing the strength and value of MTCH market-leading innovations.

https://seekingalpha.com/filing/4012699
 
Chinese - USA war: LAWSUIT Match Group, LLC (MTCH) v. Tantan Ltd. (MOMO)
http://onlinedatingsoundbarrier.blogspot.com.ar/2018/03/another-bogus-lawsuit-match-group-llc.html

but not with Bumble Badoo
Russian - USA war: LAWSUIT Match Group, LLC (MTCH) v. Bumble backed by Russian Mafia of Badoo (it is said they are in the spyware business)
http://onlinedatingsoundbarrier.blogspot.com.ar/2018/03/bumble-clapped-back-at-match-group.html
http://onlinedatingsoundbarrier.blogspot.com.ar/2018/03/now-bumble-is-suing-match-group-for-usd.html

No word about Match Group Is Defending Itself In A Patent Lawsuit Filed In January By PersonalWeb Technologies ?
a case of bogus patents as
Personal Web Technologies, LLC et al v. Match Group, LLC et al
https://insight.rpxcorp.com/lit/dedce-64337-personal-web-technologies-v-match-group
https://insight.rpxcorp.com/litigation_documents/12779752


New York Times article: Tinder and Bumble Are Seriously at War
http://onlinedatingsoundbarrier.blogspot.com.ar/2018/04/new-york-times-article-tinder-and.html

Facebook is copycatting Tinder and Bumble (via Recode)
http://onlinedatingsoundbarrier.blogspot.com.ar/2018/05/facebook-is-copycatting-tinder-and.html