The US legal system is all based on proving harm. In this case: 1: SSLMate is a paying customer. (Correct me if I'm wrong.) 2: Google harmed SSLMate, and the

The US legal system is all based on proving harm. In this case: 1: SSLMate is a paying customer. (Correct me if I'm wrong.) 2: Google harmed SSLMate, and their customers, by deliberately interrupting the services that were paid for. The big question is if SSLMate was following the terms of service. If SSLMate was actually violating the terms, then it's a hard case to make. Otherwise, Google violated the contract and harmed SSLMate, and is therefore a valid target in US court.