Mark advised technology and life sciences companies on a wide variety of antitrust, foreign investment review, and other regulatory issues, and assisted clients in acquisitions, licenses, and other technology-related commercial transactions.

Mark’s practice included regularly representing clients before various government antitrust agencies in connection with the U.S. Hart-Scott-Rodino Act and other antitrust aspects of acquisitions worldwide. He handled several hundred filings with the Federal Trade Commission and Department of Justice antitrust sections specifically responsible for technology matters, including many of the more significant transactions in the industry, such as Cisco Systems’ acquisition of Scientific Atlanta, Symantec’s acquisition of Veritas Software, Macromedia’s acquisition by Adobe, Data Domain’s acquisition by EMC, King Digital’s acquisition by Activision Blizzard, Spansion’s merger with Cypress Semiconductor, Cray’s acquisition by HPE, and Concur’s acquisition by SAP. He managed numerous HSR “second requests” and related foreign investigations involving market concentration, technology, and IP issues, including matters such as Adobe/Macromedia, Cooper/Ocular Sciences, Cadence/CCT, Microsoft/Intuit, P&G/Billie, and Sanofi/Maze Therapeutics. Mark has also represented numerous domestic and foreign clients in connection with matters before the Committee on Foreign Investment in the United States, including matters for Cerebras Systems, Niantic Labs, OSIsoft, and Smartsheet.