HP Sues Autonomy Co-Founder Lynch in U.K. for $5.1 Billion

Mike Lynch, former chief executive officer of Autonomy Corp.

Photographer: Matthew Lloyd/Bloomberg
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Hewlett-Packard Co. escalated its more than two-year-old battle with Michael Lynch, suing the Autonomy Corp. co-founder, as well as a former chief financial officer, for $5.1 billion.

Hewlett-Packard has maintained that before it agreed to buy the Cambridge, England-based software company for $10 billion in 2011, Lynch and other managers gave an overly optimistic representation of its financial health. The suit was filed in London on Monday, about two months after U.K. prosecutors dropped a fraud probe into the deal.