Latham & Watkins, DLA Piper and Freshfields Bruckhaus Deringer are acting on Cinven's £2.4bn sale of legal process outsourcer CPA Global to US private equity firm Leonard Green Partners.

The sale comes five years after Cinven purchased CPA for about £950m. The company, which has handled legal outsourcing for major corporates such as Microsoft and Rio Tinto, also provides intellectual property (IP) management and data and analytics services.

Freshfields is taking the lead role for long-term client Cinven. The firm is also advising CPA with a team led by London corporate partners David Higgins and Adrian Maguire.

CPA, which manages more than two million patents for over 10,000 customers around the world, has 23 offices worldwide and is headquartered in Jersey.

Leonard Green has turned to Latham on the deal, with corporate and private equity partner Michael Bond leading the firm's team.

DLA Piper is advising CPA's management with a team led by UK head of corporate and partner Charles Cook, alongside London corporate partners David Raff and Chris Baird.

Freshfields and DLA also advised on Cinven's 2012 acquisition of CPA from Intermediate Capital Group. Freshfields acted for Cinven on that deal, with Travers Smith leading for CPA and CPA's management advised by DLA Piper.

In 2010, CPA recruited Rio Tinto general counsel Leah Cooper as director of legal services outsourcing. Cooper subsequently left to launch her own consulting business, Leah Cooper Consulting.

About half of CPA's legal clients are corporations, while the other 50% are law firms, including Eversheds Sutherland and Clifford Chance.