We are suing some people in a civil case (case B). They have a lawyer representing them in another case (case A). We are the plaintiffs in case A too. Our process server tried to serve the defendants' lawyer at the lawyer's "office". He works out of a virtual office, and there was nobody there who would accept service for him. Nevertheless, the process server managed to serve someone who he was able to identify as "office manager". A few days later, the attorney served a "notice of defective service" in case B on behalf of the defendants we sought to serve. So my question is: Have we made a valid service of the summons/complaint? If the lawyer files a paper in the court in case B on behalf of our defendants, hasn't he acknowledged that he represents them?