Apparently this country’s only big enough for one security company with a blue logo. 

• A few months ago, Ring added new alarms -- called Outdoor Sirens -- for customers: They were octagonal and they were blue, and if you knew anything about home security they probably looked familiar. That’s because ADT has used an octagonal blue sign for decades and has the trademarks to prove it.

• So ADT sued Ring in April: It asked Ring to stop using the sirens and to fork over some cash in damages. The lawsuit worked. The companies settled last week, and Ring will have to redesign the Outdoor Siren. 

The Verdict

This isn’t the first time ADT has gone after Ring for trademark infringement. A previous sign led to controversy, and so did a dispute over alleged proprietary info.