Charles B. Klein, Partner

Chuck Klein is a litigation partner in Winston & Strawn’s Washington, D.C. office. His practice focuses on complex commercial litigation, appellate litigation, white-collar criminal litigation, and corporate internal investigations involving a wide array of subject matters—including patent infringement, class actions, antitrust, public corruption crimes, securities fraud, fiduciary duty, regulatory investigations, among others.

Over the past few years, Mr. Klein has concentrated his practice on the pharmaceutical industry. This includes litigating billion-dollar antitrust issues, as well as representing generic drug manufacturers in cases brought under the Hatch-Waxman Act and in related regulatory proceedings before the FDA. His representations span a variety of drug products, including Norvir®, Kaletra®, Crestor®, Namenda®, Plavix®, Prandin®, Lovenox®, among others.

Mr. Klein’s trial and courtroom experience is extensive. For example, he was a member of the trial team in the closely watched post-consummation antitrust challenge by the Federal Trade Commission to Evanston Northwestern Healthcare’s merger with Highland Park Hospital. He also has successfully argued and briefed countless motions in federal and state trial courts across the country.

Mr. Klein also is an accomplished appellate lawyer with a long history of achieving successful appellate outcomes, including multiple reversals. He has argued many appeals before various federal and state appellate courts, including the D.C. Circuit, Federal Circuit, Seventh Circuit, Third Circuit, among others. See, e.g., Edwards v. Snyder, 478 F.3d 827 (7th Cir. 2007); Charter Fed. Sav. Bank v. United States, 87 Fed. Appx. 175, 2004 WL 94093 (Fed. Cir. Jan. 20, 2004); United States v. Smith, 267 F.3d 1154 (D.C. Cir. 2001); and Lopez v. United States, 201 F.3d 478 (D.C. Cir. 2000). He also has prepared multiple appellate briefs filed in the United States Supreme Court, including the successful merits briefs in the seminal case construing the bribery/gratuity statute, United States v. Sun-Diamond Growers, 526 U.S. 398 (1999).

Finally, Mr. Klein has participated in several internal investigations, including the high-profile internal investigation and related litigation on behalf of the New York Stock Exchange relating to the compensation of former NYSE Chairman and CEO Richard A. Grasso. In connection with that matter, he deposed some of the most sophisticated witnesses in American politics and business, including Leon Panetta, Larry Sonsini, and the CEOs of major Wall Street firms.

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