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Allen & Overy global law firm

About us

At a time of huge change in the legal industry, we are determined to continue leading the market as we have throughout our 85-year history.

We’ll do that by staying one step ahead and by constantly challenging ourselves to bring new and original ways of thinking to the most complex legal challenges our clients face.

Over the past year we have worked with some of the world’s most sophisticated businesses on market-leading transactions that have changed their industries. This includes, advising on the largest oil refinery project in Vietnam (Nghi Son) and the joint venture between H.C. Starck and Vietnam’s largest private sector company, Masan Group; the ground-breaking creation of Abu Dhabi’s first Financial Free Zone, the Abu Dhabi Global Market; and representing Novartis in its successful patent battle with MedImmune over Novartis’s blockbuster drug Lucentis – to name just a few achievements.

We are able to build on the foundations of our long heritage to attract the most talented people and develop the high-performance culture necessary to innovate and change the face of business.

Our commitment to help our clients deliver their global strategies has seen us build a truly global network now spanning 45 offices in 32 countries. We have also developed strong ties with relationship law firms in more than 100 countries where we do not have a presence.

This network has allowed us to become one of the largest and most connected law firms in our peer group with a global reach and local depth that is simply unrivalled.

So when we talk about global coverage, we’re not just talking about having offices in some important cities around the world. We mean being able to combine our international resources and sector expertise to work on cross-border transactions directly in the markets and regions important to our clients.

Quick facts

  • 527 
    Approximate number of partners
  • 4,949 
    Approximate number of people
  • 45 
    Number of offices worldwide
  • 32 
    Number of countries where we have offices


“Thanks to our global network, during the calendar year 2014, we advised on USD1.3tn of transactions, a level unmatched by any other law firm in the world"

(Thomson Reuters and Dealogic).

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