Eversheds has announced an association with leading Irish law firm O'Donnell Sweeney.
It takes to 11 the number of new international associations for Eversheds in the last two years.
The move is part of its push to extend its presence across the EU.
Meg Heppel, senior office partner at Eversheds in Birmingham, said: "This is an excellent opportunity to extend our presence into Ireland, whilst ensuring that clients either based in or having business interests there, feel they are getting local expertise and relationships as well as high quality legal support.
"Ireland is one of the most vibrant and exciting economies in the EU and a major focus for US business, providing excellent business growth opportunities." Reed Smith, whose network spans the US from coast to coast, as well as the Midlands, London and Munich, has opened a new Paris office.
It has recruited four French partners led by Mathieu Rambaud and Benoit Charot from law firm Rambaud Martel. They bring with them an initial team of six associates, and in France will operate as Reed Smith Rambaud Charot.
Mr Rambaud is a specialist in public and private mergers and acquisitions, while Mr Charot concentrates on professional and industrial risk, asbestos litigation, product liability, commercial litigation, and white collar crime.
Chris Hill, managing partner of Reed Smith in the Midlands, said: "There are some large French companies, with strong links to the West Midlands, for whom the prospect of dealing with a truly international law firm will be very attractive."
Meanwhile a Coventry law firm has joined forces with a London practice to carry out a transaction with more than £100 million.
When one of Band Hatton's clients acquired a portfolio of properties in excess of £100 million, it struck up a professional accord with CMS Cameron McKenna, via the Law Net Group.
Philip Costigan, commercial property solicitor and partner at Band Hatton, said the link had proved "very beneficial". He went on: "The principal reason behind the partnership was associated with our indemnity insurance cover. Ours is £15 million which is very high for a firm of this size - many still carry a minimum of £2 million.
" But when we were approached to carry out the deal, we needed to work in partnership with one of the major City firms."
The commercial property team at Band Hatton includes Philip Costigan, Haydn Jones, Julie Calcott and Neil Malone.
The department's work accounts for close to 30 per cent of Band Hatton's annual turnover, while all property, including residential, accounts for almost half.