About

 John Dienner brings extensive experience to his legal representation of businesses and individuals.  He is experienced in construction disputes ranging from small commercial properties to warehouses, high-rise developments and state of the art water treatment plants. His general commercial litigation experience includes disputes arising out of non-compete and non-circumvention agreements, contract disputes, partnership dissolutions; and claims of mismanagement and fraud.  He has represented clients in employment litigation matters including claims of unpaid commissions and discrimination based on age, sex and race.Mr. Dienner was an original member of the trial bar of the United States District Court for the Northern District of Illinois, Eastern Division in Chicago, Illinois.  He has appeared in more than one hundred cases before that court and handled dozens of appeals in the United States Court of Appeals for the Seventh Circuit.  He has presented arguments before the United States Supreme Court.Mr. Dienner has litigated bench and jury cases in the Circuit Court of Cook County, Illinois and argued cases before the Illinois Appellate Court and the Illinois Supreme Court.  He has represented clients before administrative agencies including the EEOC, IL Department of Human Rights, United States Securities and Exchange Commission, Illinois Department of Financial and Professional Regulation, Illinois Department of Insurance, and the Illinois Attorney Registration and Disciplinary Commission.Mr. Dienner commenced his practice as a law clerk for a United States District Court Judge in Chicago.  He was thereafter appointed an Assistant States Attorney for Cook County, Illinois in the Civil Division acting as Chief of the Federal Litigation Division.  He has since been employed in the private practice of law with the law firms of Pierce, Lydon, Griffin & Montana, P.C.; Sedgwick, Detert, Moran & Arnold; and Kubasiak, Fylstra, Thorpe & Rotunno, P.C.   Mr. Dienner has recently opened his own office in Willis Tower in Chicago. His focus is on providing the highest quality, cost-efficient services to his clients.  He seeks to quickly identify and resolve the critical issue that prevents the parties from bringing their dispute to a conclusion.      

Practices Areas

Litigation

Employment and labor

Language

English

Contact

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