Jones Day plans to open a new office in Melbourne in February—its fourth in Australia and its 43rd worldwide.

The office, which the firm said would focus on mergers and acquisitions, energy, intellectual property, restructuring and dispute resolution, will have three partners.

Investigations and white collar defense partner Tim L’Estrange will lead the Melbourne office, relocating from Sydney, where he has been office partner-in-charge. A longtime Allens partner, L’Estrange joined Jones Day in 2013 from The Australia and New Zealand Banking Group Ltd., where he served as global head of corporate governance.

L’Estrange will be joined in Melbourne by patent litigation partner Lisa Taliadoros and energy partner Darren Murphy.

Taliadoros, who now leads the firm’s Australia IP practice from Sydney, represents multinational pharmaceutical companies such as Myriad Genetics Inc. and Merck & Co. Inc. on patent disputes in Australia.

Murphy will relocate from Jones Day’s Singapore office, where he advises on M&A transactions in the energy sector. Last year, he advised Singapore-based Biomass Ventures Pte. Ltd. on securing an investment from InfraCo Asia Development Pte. Ltd. for a biomass project in Sri Lanka.

Jones Day first opened in Australia in 1998 with an office in Sydney; the firm added Perth and Brisbane offices in 2014 and 2016, respectively. It now has 85 lawyers in Australia.

“Melbourne is an important legal market and, in combination with our offices in Sydney, Perth, and Brisbane, creates a critical mass of legal experience across the four major legal markets in Australia,” said Chris Ahern, Jones Day’s partner-in-charge for Australia and Japan.

Litigation partner John Emmerig will succeed L’Estrange as office partner-in-charge in Sydney. following L’Estrange’s relocation.