Mark McKeen concentrates on complex commercial and real estate litigation and trial practice, with emphasis in real property law, intellectual property, environmental claims, business torts, trade secrets, unfair competition, Uniform Commercial Code, bankruptcy proceedings and partnership disputes. He is co-chair of DLA Piper's national Real Estate Litigation Practice.

Mark has substantial experience in the representation of emerging growth technology companies, publicly held companies and general and limited partnerships. He has litigated federal and state court cases in California, Washington, Texas, New Mexico, Florida, New York, Colorado, Arizona, North Carolina and Puerto Rico.