A Houston man has filed a malpractice suit against Houston lawyer Stewart W. Gagnon and his firm, Fulbright & Jaworski, alleging they failed to use “ordinary care” when representing him in a 2010 divorce and “engaged in a practice of excessive billing and over billing for tasks performed.”

In a petition filed in the 55th District Court in Harris County, Mark D. Howell, a financial adviser, alleges Gagnon and Fulbright failed to keep him timely informed of details of the divorce and gave him some inaccurate information. Howell also alleges delays in the divorce caused him to miss out on about $420,000 in profits because he could not sell some silver bullion when prices were high.