Professional Liability Litigation

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The trial attorneys of Williams Montgomery & John are known for their vigilant and effective defense of professionals facing malpractice and misfeasance actions.

We have been the go-to firm for lawyers, accountants, architects, engineers, insurance brokers and agents and real estate professionals. Our professional liability practice also extends to errors and omissions claims against corporate officers and directors, trustees, clergy and reinsurance intermediaries. In addition, we provide insurance coverage analysis for professional liability claims.

Our attorneys have represented law firms throughout the country in malpractice cases involving patents, securities fraud, conspiracy, RICO, lender liability and a host of other issues.  We have represented individual accountants, "Big 4" accounting firms, many large regional firms and many of the largest accounting firms in Chicago in state and federal courts across the United States, as well as before many state licensing and accounting boards, the American Institute of CPAs and the Securities and Exchange Commission.

We have represented insurance agents and brokers in lawsuits alleging fraud and misrepresentation; engineers and architects against claims of professional negligence; and real estate professionals in malpractice actions and in disciplinary proceedings before the Illinois Department of Financial and Professional Regulation.

The firm's professional liability practice is led by C. Barry Montgomery.

For more information about the firm's professional liability practice, please contact Mr. Montgomery at 312.443.3242 or