Thomson Geer

Thomson Geer is a prominent independent Australian corporate law firm known for delivering outstanding legal skills and service while focusing on achieving commercial goals for its diverse client base. Established in 1885 through the origins of its predecessor firm Varley & Evan, the firm officially formed on 31 March 2014 through the merger of Thomsons Lawyers and Melbourne-based Herbert Geer. Headquartered in Sydney, Thomson Geer maintains a fully integrated national presence with offices in Melbourne, Brisbane, Perth, Adelaide, and Canberra, solidifying its position as one of Australia's largest law firms.

The firm serves a broad spectrum of clients, including companies listed on the Australian Stock Exchange (ASX) Top 200, major global foreign corporations, ASX Mid and Small Caps, government enterprises, and large and medium private corporations. Adrian Tembel, appointed Chief Executive Partner in 2009, has been instrumental in steering the firm's national growth and strategic direction, leading its expansion efforts, which included the acquisition of major Sydney competitor Kemp Strang in 2018 and the integration of a 21-strong team from Dentons in Brisbane in 2020. Thomson Geer distinguishes itself through its commitment to an open and transparent culture, fostering cross-disciplinary collaboration among its more than 800 people, including over 155 partners, to provide comprehensive legal solutions tailored to client needs.

Thomson Geer is recognised for its significant legal work and strategic advisory services. The firm was ranked first for M&A volume in 2025. Key achievements include advising Japanese food and beverage giant Kirin Holdings Company, Limited on its A$1.8 billion acquisition of Blackmores, and guiding MMA Offshore through its A$1.1 billion acquisition by Cyan Renewables, which was reportedly the largest takeover in the Asia-Pacific wind power segment for 2024. The firm also successfully defended former Prime Minister Scott Morrison and others in a significant Federal Liberal Party intervention case in 2022, establishing a leading precedent in Australia on the justiciability of disputes arising from unincorporated political parties' constitutions. Further demonstrating its impact, Thomson Geer represented iiNet and other internet service providers in a landmark copyright infringement case in 2015, which set legal precedence for damages in Australia. The firm's affiliate businesses, TG Public Affairs, TG Legal + Technology, and TG Mining Services, offer specialised advice in public policy, high-volume legal services, and tenement management, further enhancing its differentiated offering.