Lois O. Rosenbaum

Lois O. Rosenbaum

Senior Counsel
Portland, OR

About Lois

Lois Rosenbaum joined the firm in 1977 and is Senior Counsel in the firm’s Litigation group. She has represented numerous public and private companies and their officers and directors in class actions, SEC and other government actions and investigations, and M & A litigation. She has represented plaintiffs and defendants in complex litigation, fiduciary duty disputes, Internet-defamation, unfair competition, Lanham Act, and RICO cases. She has served as national coordinating council in major products liability litigation involving asbestos and contaminated food products and has served as special counsel to special litigation and audit committees.

Ms. Rosenbaum has been listed for many years as a Tier 1 lawyer in Chambers USA, America’s Leading Lawyers for Business. She was named 2012, 2014 and 2016 Oregon Mergers and Acquisitions “Lawyer of the Year” by Best Lawyers® and is listed in Best Lawyers in America© for securities litigation, mergers and acquisitions litigation, and commercial litigation.

Ms. Rosenbaum was an associate at Fried, Frank, Harris, Shriver & Kampelman (D.C.), from 1974–1975, and at Orrick Herrington Rowley & Sutcliffe (San Francisco) from 1975–1977.

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Representative Securities Class Action and Derivative Litigation

  • In re Mentor Graphics Corporation Litigation – Prevailed on behalf of Mentor Graphics and its Board of Directors in defending securities class action claiming breach of fiduciary duties in rejecting acquisition bid from Carl Icahn. 
  • Gonzales v. Farmers Insurance Company of Oregon – Defeated class certification in breach of contract and duty of fair dealing case filed by insureds.
  • In re Digimarc Securities Litigation – Prevailed on behalf of public company and officers and directors in securities class action; judgment upheld by Ninth Circuit Court of Appeals.
  • Cohns v. Mastercraft Furniture, Inc. – Prevailed at trial on behalf of 49% shareholder in oppression lawsuit against 51 % shareholder.
  • Florida Eye Institute v. Minotty – Prevailed at trial on behalf of plaintiff shareholders in breach of fiduciary duty action against controlling shareholder; obtained multi-million dollar damages award.
  • Avia Securities Litigation – Prevailed on behalf of CEO of public company at trial of class action alleging breach of fiduciary duties.
  • Bodtker v. Forest City Trading Group – Obtained dismissal with prejudice of RICO class action in federal court after defeating class certification motion in state court.
  • In re Cray Inc. Securities Litigation – Obtained dismissal with prejudice of class action.
  • Cray Inc. Derivative Litigation – Obtained dismissal with prejudice of derivative lawsuit.
  • In re Eagle Hardware & Garden, Inc. – Represented defendant public company in securities class action; negotiated settlement within insurance limits and without fees to plaintiffs’ counsel.
  • In re Epitope Securities Litigation – Represented public company in securities class action; settled by issuing warrants.
  • Protocol Systems Securities Litigation – Obtained dismissal with prejudice of shareholder class action.
  • Rolex v. Mentor Graphics Securities Litigation – Obtained dismissal with prejudice of class action.
  • Sequent Computer Securities Litigation – Defeated class certification in securities class action.
  • Steiner v. Tektronix, Inc. Securities Litigation – Obtained summary judgment in favor of company and directors in securities class action.
  • Zidell v. Zidell, et al. – Prevailed at trial in defending officers and directors against shareholder derivative litigation.
  • Polonitza v. White, et al.– Represented individual board members of ITEX Corporation in shareholder breach of fiduciary duty action. Negotiated favorable settlement of the action.

Representative Consumer/Tainted Food Litigation

  • Crowson v. QFC, Inc. – Obtained summary judgment for defendant grocery chain in class action alleging fear of mad cow disease.
  • Galego v. Fred Meyer, Inc. – Obtained summary judgment for defendant grocery chain in weights and measures consumer class action.
  • Krupp v. The Kroger Co. – Obtained dismissal with prejudice of class action alleging salmon mislabeling.
  • In re Tainted Strawberry Litigation – National coordinating counsel for defendant public company in lawsuits alleging sale of strawberries tainted with Hepatitis B; obtained dismissal of class actions and individual lawsuits.
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Honors & Activities

Professional Honors and Activities

  • Named by Best Lawyers® as Litigation-Mergers & Acquisitions “Lawyer of the Year,” Portland, 2012, 2014 and 2016
  • Included in The Best Lawyers in America© (currently: Commercial Litigation, Litigation-Mergers & Acquisitions, Litigation-Securities), 2006–2021
  • Selected as one of “America’s Leading Lawyers for Business” (Oregon) by Chambers USA (currently: Litigation: General Commercial), 2004–2020
  • Listed Tier 1 or above in Chambers USA: America’s Leading Lawyers for Business, 2005–2020
  • Selected as one of Oregon’s top 25 Women Lawyers in Oregon Super Lawyers®
  • Listed in Oregon Super Lawyers® (Business Litigation, Securities Litigation, Class Action/Mass Torts), 2006–2020
  • Fellow, American Bar Association 
  • Former Chair, District of Oregon Lawyer Representatives, Ninth Circuit Judicial Conference
  • Federal Court Mediation Panel
  • Former Chair, Federal Bar Practice and Procedure Committee
  • Former Chair, Multnomah Bar Association Professionalism Committee

Civic Activities

  • Board of Directors, Legacy Good Samaritan Medical Center Foundation, 2014–present 
  • Board of Directors, Big Brothers Big Sisters, Columbia Northwest, 2005–2013
  • Board of Directors, Providence Hospital Foundation, 2005–2013
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Insights & Presentations

Insights & Presentations

  • Frequent speaker at securities conferences, including Northwest Securities Conference, Willamette Securities Conference, and Lewis & Clark Law School Cutting-Edge Bet the Company Litigation Conference

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