The firm cites that Ring's blue octagon outdoor siren is an example of trademark violation. In the filing, ADT lists a dozen of its trademark registrations dating back to the late '90s that feature a ...

ADT on Tuesday announced that it has filed a lawsuit against Ring alleging that the Amazon-owned company infringed upon its trademark when it began using a blue octagon mark for its security products ...

(Bloomberg) -- ADT Inc., the largest home-security company in the U.S., filed a lawsuit accusing Amazon.com Inc.’s Ring service of copying its trademarked blue octagon symbol “to tout a reputation for ...