Addleshaw Goddard has settled one of its three upcoming proceedings for Russian oligarch Boris Berezovsky, ending his $3bn (£1.9bn) claim against the Patarkatsishvili family.

The claim was settled today (13 September) with Signature Litigation founding partner Graham Huntley advising the family of now-deceased Georgian billionaire Arkady 'Badri' Patarkatsishvili and Addleshaws litigation partners Mark Hastings and John Kelleher representing Berezovsky.

The dispute centred on whether Berezovsky had an interest in certain assets held by Patarkatsishvili after he died in February 2008. Patarkatsishvili's family denied the claim and brought a substantial counterclaim.

In a statement, Signature Litigation confirmed that "the proceedings have been withdrawn with no admission of liability by any of the parties."

Berezovsky's two further claims against Russian metal magnate Vasily Anisimov and investment company Salford are scheduled to be heard in court in November this year.

Freshfields Bruckhaus Deringer litigation partners Ian Terry and Matthew Bruce are acting for Anisimov with 3 Verulam Buildings' Ali Malek QC and Sonia Tolaney QC as counsel. Macfarlanes litigation partner Iain Mackie is representing Salford with Brick Court Chambers' Alan Maclean QC.

The upcoming proceedings involve a $2bn (£1.2bn) claim for breach of fiduciary duty and breach of trust against Anisimov over Berezovsky's interest in iron ore producer Metalloinvest. The Patarkatsishvili family also has a claim against Anisimov over the company.

Berezovsky's claim against Salford for mismanagement is still currently proceeding to trial as well.

In a statement, Hastings said: "Our work to date on behalf of Boris Berezovsky has been, complex, high value and profitable litigation, and our team has performed exceptionally well. Today's outcome is an important development for our client who is very pleased with the firm's contribution."

The news comes after Berezovsky suffered a conclusive loss against Chelsea Football Club owner Roman Abramovich over claims regarding his shares in Russian oil company Sibneft and aluminium company Rusal.

The case has attracted much attention from the media due to both its size and Addleshaws' conditional fee agreement (CFA) with Berezovsky.

The UK firm is also acting on the upcoming proceedings under a CFA. The level of discount on the Abramovich case stood somewhere in the region of 50%.

Hastings added: "We remain committed to providing innovative pricing arrangements for our clients generally, and specifically relating to litigation, including, where appropriate, CFAs. That approach has proven to be a valuable and successful one for both us and our clients."

For more, see Addleshaws to miss out on success fee as Abramovich wins court battle.