Plunkett Cooney | Michigan Law Firm | Illinois | Indiana | Ohio | Attorneys | Lawyers With offices in Michigan, Illinois, Indiana and Ohio, our attorney have expertise in business law and litigation defense involving appellate law, bankruptcy, construction, employment liability, insura Plunkett Cooney is a Michigan law firm with offices in Illinois, Indiana and Ohio and attorneys practicing in litigation, corporate, appellate, commercial litigation, insurance law, construction, environmental, medical liability, trusts and estate planning, municipal, administrative and regulatory, real estate, banking and finance, and healthcare.