About Karen

Karen Tsai's practice focuses on international regulatory compliance and international business transactions. Her experience includes advising companies on corporate compliance and due diligence matters arising under the US Foreign Corrupt Practices Act. She has experience counseling clients regarding anti-corruption compliance policies and procedures, due diligence reviews of sales representatives, consultants, distributors and agents, gifts, hospitalities, travel and entertainment benefits, and internal investigations. 

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Experience

Infleqtion to Go Public Through Merger With Churchill Capital Corp X

Infleqtion to Go Public Through Merger With Churchill Capital Corp X

September 8, 2025

Cooley advised Infleqtion, a global leader in neutral atom-based quantum technology, on its definitive business combination agreement with Churchill Capital Corp X, with the aim to accelerate Infleqtion’s mission to commercialize quantum products that provide orders of magnitude improvement in computing and precision sensing applications.

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Related contacts

Mike Nelson
Partner, Colorado
Garth Angelo Osterman
Partner, San Francisco
Kristin VanderPas
Partner, San Francisco
Peter Byrne
Partner, New York
Caitlin Breitenbruck
Associate, Seattle
Christine Turner
Associate, Colorado
Won Lee
Associate, Colorado
Ryan Lewis
Associate, Colorado
Orion Armon
Partner, Colorado
Ann Bevitt
Partner, London
Chris Coulter
Partner, London
Ross Eberly
Partner, Santa Monica
David Fletcher
Partner, Washington, DC
Annie Froehlich
Partner, Washington, DC
Todd Gluth
Partner, San Diego
Charles Haley
Partner, Palo Alto
Caroline Hobson
Partner, London
Christopher Kimball
Partner, Washington, DC
Kevin King
Partner, Washington, DC
Barbara Mirza
Partner, Santa Monica
Carly Mitchell
Partner, Washington, DC
Jeremy Morrison
Partner, Washington, DC
Julia R. Brinton
Special Counsel, Washington, DC
Andrew Epstein
Special Counsel, Seattle
Karen Tsai
Special Counsel, Washington, DC
Ryan Bowers
Associate, Washington, DC
Anna Caro
Associate, London
Danielle Carvalho
Associate, Boston
Grady Chang
Associate, Santa Monica
Umer Chaudhry
Associate, Washington, DC
David Dalton
Associate, Santa Monica
Maddie Drabble
Associate, London
Austin Dressen
Associate, Colorado
Megan Drill
Associate, San Diego
Virat Gupta
Associate, Washington, DC
Peter A. Haddad
Associate, San Diego
Elaine Huang
Associate, Palo Alto
Nicollette R. Kirby
Associate, Washington, DC
Andrew Mettry
Associate
Daniel Millard
Associate, London
Emily Mok
Associate, Reston
Juan Nascimbene
Associate, London
Sarah Oliai
Associate, Washington, DC
Emma Plankey
Associate, Boston
Natalie D. Vernon
Associate, Colorado
Brandan Ward
Associate, Colorado
Zi Ye
Associate, Palo Alto
Katherine Duplay
Paralegal Specialist, Colorado
Brandon Lefebvre
Quantitative Analyst, Boston
Kathryn Benvenuti
Associate, New York

Related Practices & Industries

Emerging Companies
Mergers and Acquisitions
Capital Markets
Technology Transactions
Technology
Tax
Compensation and Benefits
Cyber/Data/Privacy
Labor and Employment
Antitrust and Competition

Hengrui Pharma and Braveheart Bio Enter Into Exclusive License Agreement

Hengrui Pharma and Braveheart Bio Enter Into Exclusive License Agreement

September 5, 2025

Cooley advised Hengrui Pharma, a global pharmaceutical company, on its exclusive license agreement with Braveheart Bio for HRS-1893, a small-molecule inhibitor of cardiac myosin independently developed by Hengrui Pharma with best-in-class potential.

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Related contacts

Alan W. Tamarelli
Partner, New York
Freddy Yip
Associate, Hong Kong
Steve Przesmicki
Partner, San Diego
Navya Dasari
Associate, New York
Max Levinbook
Associate, San Diego
Jeffrey J. Tolin
Partner, New York
Amanda Pacheco
Associate, Palo Alto
David Burns
Special Counsel, Washington, DC
Andrew Epstein
Special Counsel, Seattle
Zhijing Yu
Associate, Singapore
Christopher Kimball
Partner, Washington, DC
Robert Eisenbach
Of Counsel, San Francisco
Rachel Thorn
Of counsel, New York
Karen Tsai
Special Counsel, Washington, DC

Related Practices & Industries

Life Sciences Corporate Partnering and Licensing
Life Sciences
Healthcare
Biotechnology
Tax
Antitrust and Competition
Cyber/Data/Privacy
CFIUS
Business Restructuring
Commercial Litigation
Asia

Reliance Industries Announces Strategic Partnership With Meta

Reliance Industries Announces Strategic Partnership With Meta

August 29, 2025

Cooley advised Indian conglomerate Reliance Industries on its joint venture with Meta that will build and scale enterprise artificial intelligence solutions for enterprises in India and select international markets.

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Related contacts

Rishab Kumar
Partner, Palo Alto
Tracy Rubin
Partner, Palo Alto
Jenny Ge
Associate, Santa Monica
Queenie Chen
Associate, Palo Alto
Matthew Bartus
Partner, San Francisco
Megan Browdie
Partner, Washington, DC
Annie Froehlich
Partner, Washington, DC
Christopher Kimball
Partner, Washington, DC
Kevin King
Partner, Washington, DC
Sale Kwon
Partner, Palo Alto
Xander Lee
Partner, Santa Monica
Stella Sarma
Partner, Brussels
Leo Spicer-Phelps
Partner, London
Karen Tsai
Special Counsel, Washington, DC
Chelsea André
Associate, Colorado
Athina Gaki
Associate, Brussels
Jose Luis Gonzalez
Associate, Palo Alto
Patrick Johnson
Director of Marketing – Litigation, Chicago
Sarah Oliai
Associate, Washington, DC
Liz Paisner
Associate, New York
Kealan Santistevan
Associate, Palo Alto
John T. Stellini
Associate, Palo Alto
Ziwei Xiao
Associate, Palo Alto

Related Practices & Industries

Mergers and Acquisitions
Artificial Intelligence
Technology Transactions
Emerging Companies
Tax
India
Antitrust and Competition

Framer Secures $100 Million Series D

Framer Secures $100 Million Series D

August 28, 2025

Cooley advised Framer, a professional website design platform that has quickly become the platform of choice for companies that want to ship their entire .com, on its $100 million Series D financing.

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Related contacts

Peter H. Werner
Partner in Charge – San Francisco, San Francisco
Daniel Shamah
Partner, New York
Tamim Bazzi
Partner, New York
Erin Wright
Associate, San Francisco
Karem M. Jarada
Associate, San Francisco
Christopher Kimball
Partner, Washington, DC
Bryan Berman
Special Counsel, Colorado
Sharon Connaughton
Special Counsel, Washington, DC
Karen Tsai
Special Counsel, Washington, DC
David Dalton
Associate, Santa Monica
Juan Nascimbene
Associate, London
David H. Zhou
Associate, Palo Alto
Kris Tsao Cachia
Paralegal Specialist, San Francisco
Katie Kissner
Quantitative Analyst, San Francisco

Related Practices & Industries

Emerging Companies
Technology Transactions
Antitrust and Competition
Tax
Technology

Group14 Technologies Closes $463 Million Series D and Acquisition of BAM Factory

Group14 Technologies Closes $463 Million Series D and Acquisition of BAM Factory

August 20, 2025

Cooley advised Group14 Technologies, a global leader in advanced silicon battery materials, on the close of its $463 million Series D financing and acquisition of its joint venture with SK, Inc.

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Related contacts

Alan Hambelton
Partner, Seattle
Phoebe Huang
Associate, Seattle
Millie Heuer
Associate, Seattle
Sharon Connaughton
Special Counsel, Washington, DC
Sarah Oliai
Associate, Washington, DC
Kevin King
Partner, Washington, DC
Lucy Bauer
Associate, Seattle
Christopher Kimball
Partner, Washington, DC
Sarah Sellers
Partner, New York
Brandon Lefebvre
Quantitative Analyst, Boston
Brian Woodard
Paralegal Specialist, Seattle
Nick Davis
Partner in Charge – Seattle, Seattle
Andrea Bromfeld
Special Counsel, New York
Andrew Epstein
Special Counsel, Seattle
Karen Tsai
Special Counsel, Washington, DC
Julie Wicklund
Special Counsel, Palo Alto
Alice C. Hu
Associate, San Francisco

Related Practices & Industries

Capital Markets
Emerging Companies
Antitrust and Competition
CFIUS
Cyber/Data/Privacy
Debt Finance
Mergers and Acquisitions
Technology
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Admissions and credentials

District of Columbia

New York

Rankings and accolades

The Legal 500 US: Customs, Export Controls and Economic Sanctions (2024 – 2025)