Lawyers for WPP and Martin Sorrell Exchange Letters Over Ex-CEO's 'Unlawful' Attempt to Acquire MediaMonks

Notes concern confidentiality agreements

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The spat between WPP and former CEO Martin Sorrell over the future ownership of digital production company MediaMonks quickly escalated into a potential legal battle this week.

The Guardian first reported late Thursday that the holding group Sorrell ran for 33 years sent a letter to his London-based law firm, Lewis Silkin, arguing that any attempt to acquire the Amsterdam-based network would violate the confidentiality agreement Sorrell signed when he left the company in April.

WPP spokespeople declined to comment today.

A source close to Sorrell, however, confirmed the existence of the letter, which was sent to Sorrell personally rather than to his new company, S4 Capital.

The

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