Four women with injuries from transvaginal mesh medical devices alleged in a legal-malpractice lawsuit that their attorneys and law firms botched their cases by missing the statute of limitations, and then kept the mistake secret and lumped them into aggregate settlements.

But in a twist, one of the law firm defendants has sued the plaintiffs’ attorneys, alleging they stole trade-secret client lists, improperly solicited the pelvic mesh clients and publicly revealed confidential settlements in violation of court orders.