Yvonne Johnson is the Managing Partner at Barker Brettell and an experienced and accomplished patent attorney with over 25 years of experience, particularly in chemistry and life sciences. She has extensive expertise in the health care and medical industries, including pharmaceutical formulations, and is skilled at navigating Europe’s excluded matter rules related to therapeutic, surgical, and diagnostic methods. Yvonne is known for delivering pragmatic, commercially focused advice. Her areas of expertise include patent oppositions and appeals, patent drafting and strategy, patent prosecution and portfolio management, patent validity and opinion work, and unitary patents.