David Marcus has served as lead counsel in numerous jury trials, helping to safeguard the rights of individuals and small business owners all across the country. During the height of the pandemic, in a products liability case involving defective home exercise equipment, he obtained a jury verdict that was more than double the amount of the last pre-trial settlement offer.  He successfully negotiated a seven-figure settlement in a legal malpractice case without filing suit. He has handled multiple intellectual property disputes, including cases involving alleged patent infringement and copyright infringement. He has zealously advocated for clients in cases involving alleged breaches of contract and business and consumer fraud.  He has practiced in numerous state and federal courts, including the United States District Courts in the Eastern District of Missouri, the Western District of Missouri, the District of Kansas, the District of Nebraska, and the Northern District of Texas.  He also has practiced before the United States Patent and Trademark Office Patent Trial and Appeal Board, the United States Court of Appeals for the Federal Circuit, the United States Court of Appeals for the Eighth Circuit, and the United States Court of Appeals for the Tenth Circuit.