Douglas brings a broad range of experience in mergers and acquisitions, corporate governance, strategic alliances, and commercial ventures. He represents medical device, pharmaceutical, and health care-related companies and products.

Douglas has an active collaborations practice, negotiating licensing, joint venture, and development agreements related to intellectual property rights.

• Represented Imugene Ltd. (IMU:AUX), a clinical stage immuno-oncology company developing a range of new and novel immunotherapies seeking to activate the immune system of cancer patients to treat and eradicate tumors, in its strategic transaction with Precision BioSciences, Inc., valued up to $227 million.
• Advised Biohaven Pharmaceutical Holding Company Ltd. (NYSE: BHVN) in the sale of its migraine business, including NURTEC® ODT, an innovative dual-acting migraine therapy approved for both acute treatment and episodic prevention of migraine in adults, and zavegepant to Pfizer in a total deal consideration valued at approximately $13 billion.
• Represented Oscor, Inc., a leading designer, developer, and manufacturer of highly specialized implantable cardiac pacing leads, venous access systems, and diagnostic catheters, in its sale of $220 million to Integer Holdings Corporation.
• Represented Shanghai Haohai Biological Technology Co., Ltd., a public company traded on the Hong Kong and Shanghai stock exchanges, in connection with its $40 million series A preferred equity investment in Eirion Therapeutics, Inc., a biotech startup based in Massachusetts, and related licensing arrangements.
• Advised Biohaven Pharmaceutical Holding Company (NYSE: BHVN) in its acquisition of the remaining 58% interest of Kleo Pharmaceuticals, Inc., which it did not previously own, and the execution of an exclusive license agreement with Yale University for a novel extracellular degrader technology licensed from the Spiegel Lab.
• Advised Biohaven Pharmaceutical Holding Company (NYSE: BHVN) and its affiliate BioShin Limited in a $60 million series A preferred equity financing of BioShin Limited, Biohaven’s subsidiary.
• Represented Leonard Valve Company, a Rhode Island-based designer and manufacturer of water temperature control valves and monitoring devices used in institutional and commercial applications, and its owners in the sale of the equity interests of Leonard Valve to Bessemer Investors.

• The Best Lawyers in America®, Providence Corporate Law Lawyer of the Year (2015, 2023)
• The Best Lawyers in America®, Corporate Law, Mergers and Acquisitions Law (2010-2026)
• Rhode Island Monthly Professional, Excellence in the Law, Business Law (2023-2024)
• Chambers USA, Corporate/Commercial Law, Rhode Island (2007-2025)
• Super Lawyers® Rhode Island, Mergers & Acquisitions (2011-2020)
• AV Rating® by Martindale-Hubbell