Experience

Capstan Therapeutics Announces up to $2.1 Billion Acquisition by AbbVie

June 30, 2025

Cooley advised Capstan Therapeutics, a clinical-stage biotechnology company with a mission to multiply therapeutic possibilities for patients through targeted in vivo RNA technologies, on its definitive agreement to be acquired by AbbVie.

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Related contacts

Rama Padmanabhan
Partner, San Diego
Ken Rollins
Partner in Charge – San Diego, San Diego
Edmond Lay
Partner, San Diego
Charity Williams
Partner, San Diego
Lindsey O'Crump
Associate, Washington, DC
Megan Browdie
Partner, Washington, DC
Ross Eberly
Partner, Santa Monica
Christopher Kimball
Partner, Washington, DC
Alessandra Murata
Partner, Palo Alto
W. Chad Shear
Partner, San Diego
Jeffrey J. Tolin
Partner, New York
Stacey A. Bradford
Special Counsel, Washington, DC
Andrew Epstein
Special Counsel, Seattle
Randy Sabett
Special Counsel, Washington, DC
Karen Tsai
Special Counsel, Washington, DC
Natasha Leskovsek
Of Counsel, Washington, DC
Rachel Thorn
Of counsel, New York
Alexandria Ashour
Associate, San Diego
Navya Dasari
Associate, New York
Joshua Elefant
Associate, Palo Alto
Tony P. Guan
Associate, Santa Monica
Michelle Hunt
Associate
Emily Mok
Associate, Reston
Jonathan Perez-Reyzin
Associate, San Diego
Breanna Qin
Associate, Palo Alto
Christopher Suhler
Associate, Colorado
Novak Topalovic
Associate, San Diego
Heidi E. Wang
Associate, San Diego
Rubin Waranch
Associate, Colorado
Yuhan Wu
Associate, Palo Alto
Joanna Zhang
Associate, San Diego
Jessica Wade
Paralegal Specialist, San Diego

Related Practices & Industries

Jiangsu Hengrui Pharmaceuticals Out-Licenses GLP-1 Portfolio

May 17, 2024

Cooley advised Jiangsu Hengrui Pharmaceuticals, one of the largest pharmaceutical companies in China, on its licensing of global rights (excluding Greater China) for the development, production and commercialization of three of its proprietary glucagon-like peptide-1 (GLP-1) drugs to Hercules CM Newco, a newly established Delaware company.

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Related contacts

Sharon Connaughton
Special Counsel, Washington, DC
Annie Froehlich
Partner, Washington, DC
Zack Gong
Associate, Shanghai
Kevin King
Partner, Washington, DC
Edmond Lay
Partner, San Diego
Howard Morse
Senior Counsel, Washington, DC
Sarah Oliai
Associate, Washington, DC
W. Chad Shear
Partner, San Diego
Michael Shen
Special Counsel, Shanghai
Alan W. Tamarelli
Partner, New York
Karen Tsai
Special Counsel, Washington, DC
Ivy Wang
Associate, Shanghai
Bin Wang
Special Counsel, Palo Alto
Letian Wei
Legal Consultant, Shanghai
Joanna Zhang
Associate, San Diego

Related Practices & Industries

I have found Chad to be incredibly strategic. He has a great ability to explain complex issues in a very easy way to understand.

Chambers USA, 2024

Admissions and credentials

US Patent and Trademark Office

California

Delaware

Rankings and accolades

Chambers USA: Life Sciences: IP/Patent Litigation – California (2025)

Chambers USA: Intellectual Property: Patent Litigation – California (2024 – 2025)

Daily Journal: Top Intellectual Property Lawyer – California (2019); California Lawyer Attorneys of the Year (CLAY) award (2018)

Euromoney: Top 30 Legal Practitioner in Life Sciences (2019, 2021)

IAM Patent 1000: Leading IP Lawyer (2019 – 2025)

LMG Life Sciences: General Patent Litigator of the Year – California (2024); Life Sciences Star (2017 – 2022); Patent Impact Case of the Year (2017, 2020, 2022); General Patent Litigator of the Year Honoree (2022); Hatch-Waxman Litigator of the Year Honoree (2020); Inter Partes Attorney of the Year Honoree (2017)

The Legal 500 US: Key Lawyer for Life Sciences and Patents: Litigation (Full Coverage) (2024 – 2025)

National Law Journal: Intellectual Property Trailblazer (2019); Winning Litigator (2018)

San Diego Business Journal: Leaders of Influence in Law (2024)

Memberships and affiliations

American Intellectual Property Law Association

Federal Circuit Bar Association

Giles S. Rich American Inn of Court – Federal Circuit

Chad is a brilliant attorney. He’s very likeable, very sharp and very hardworking … He’s represented us successfully in multibillion-dollar cases.

Client testimonial, Thomson Reuters

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