Cleary Gottlieb Steen & Hamilton has scored roles on a brace of deals for Google, including the internet search giant's proposed €3bn (£1.8bn) sale of Motorola Mobility to Lenovo.

Pending regulatory approval, the deal would make tech company Lenovo the world's third largest smartphone provider after Samsung and Apple.

Cleary is advising Google on the proposed deal, led by M&A partner Ethan Klingsberg, while the firm earlier this month landed another mandate for the longstanding client on its takeover of UK artificial intelligence start-up Deepmind for a reported £240m.

Weil Gotshal & Manges' US and Hong Kong teams are acting for the buyer on the Lenovo deal. Silicon Valley-based partners Keith Flaum and Richard Climan and Hong Kong partner Henry Ong are leading on M&A aspects, while New York partner Jeffrey Osterman and Silicon Valley partner John Brockland are providing counsel on technology and intellectual property (IP) matters.

The teams are flanked by New York tax partner Helyn Goldstein, New York employment partner Paul Wessel, Silicon Valley finance partner Gabriel Gregson and antitrust partner John Scribner.

On the Deepmind deal, London-based Cleary corporate partner Sam Bagot acted for Google on corporate and M&A matters alongside Klingsberg and fellow New York corporate partner Matt Salerno. City partner Richard Sultman and New York partner Yaron Reich led a team providing counsel on tax matters.

New York partner Michael Albano led a team from the US and City office on employee and executive compensation aspects, while London consultant Colin Pearson was among the team advising on IP matters.

Allen & Overy M&A partner Simon Toms advised Deepmind alongside San Francisco-based Shearman & Sterling M&A partner Steve Camahort.

London-based start-up was founded by neuroscientist and former chess prodigy Demis Hassabis, along with Shane Legg and Mustafa Suleyman. The company specialises in algorithms for simulations, e-commerce and games.