Emirati law firm Al-Tamimi & Company launched its 13th regional office, in Muscat, Oman, this week, continuing its expansion across the Middle East. An office in Erbil was opened in early October. Other recent entrants to Oman include Pennsylvania’s Duane Morris and London’s Addleshaw Goddard; both opened offices there this year. Observers may be interested to note that Adel, the elder brother of Al-Tamimi & Co founder Essam, in 2011 launched the first case against Oman under the Oman-US Free Trade Agreement of 2009. The case (Adel A Hamadi Al-Tamimi v Sultanate of Oman), at the International Centre for the Settlement of Investment Disputes, appears to be ongoing, with Oman filing a ‘counter-memorial’ in June.