Marissa K. Rensen

IRS Office of Chief Counsel

Marissa is an attorney at IRS Office of Chief Counsel. Prior to that, she was an associate in the Tax Controversy practice of the Washington office Mayer Brown. Prior to joining Mayer Brown in 2009, she was a law clerk to the Honorable Joseph R. Goeke of the US Tax Court. She graduated with a JD, specialized in tax law at Tulane University Law School and an LLM specialized in taxation at Georgetown University Law Center.


395 Bulletin

Marissa K. Rensen The US Supreme Court restricts the applicability of US antitrust laws with regard to injuries suffered abroad holding that foreign nations can preserve competition without American interference (Hoffman-La Roche / Empagran)


F. Hoffman-La Roche Ltd. v. Empagran S.A.: The Supreme Court Trusts That Foreign Nations Can Preserve Competition Without American Interference* In F. Hoffman-La Roche Ltd. v. Empagran S.A., the United States Supreme Court held that United States courts do not have jurisdiction over claims of (...)

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