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2025 Vault Rankings

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#2 Best Midsize Law Firms for Diversity
#3 Best Midsize Law Firms for Pro Bono
#4 Best Midsize Law Firms for Satisfaction
Best Midsize Law Firms to Work For
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At a Glance

Uppers

“The type of inventions we work with are very interesting, making the work more enjoyable.”

“The firm's people and culture.”

Downers

“Work can get monotonous.”

“Long hours and lack of training programs.”

About Caldwell

A go-to firm for high-growth startups and early-stage technology companies, Caldwell is renowned for its pioneering work in Life Sciences, Technology, Litigation, and Corporate practices with a mighty roster of accomplished attorneys, patent agents, and technical specialists. The synergy among Caldwell attorneys across various practice groups generates innovative solutions to the legal challenges their clients face. By collaborating across offices and departments, the firm offers a holistic, multidisciplinary approach that drives client success.

 
Recent and Rapid
Caldwell has been aggressively expanding since its inception in 2016. The firm established an office in Massachusetts. In 2021, Caldwell broadened its reach even further by opening a West Coast office in Santa Monica and its first international office in London. This rapid expansion has earned Caldwell top spots on the Inc. 5000 list for four consecutive years.
A Deep Bench of Experts
Caldwell has built a thriving practice around patent prosecutions, patent litigation, post-grant proceedings, and patent portfolio strategy. Caldwell also has a strong corporate and trademark practice, including counseling and prosecution, licensing, and litigation. Our team of seasoned attorneys is well-equipped to handle complex corporate and intellectual property transactions and navigate the intricacies of litigation with finesse. We bring a wealth of experience to every legal challenge, ensuring our clients receive comprehensive and strategic solutions. Our firm continues to rapidly expand and grow each year. For the past four years in a row, Caldwell has been named as one of the fastest-growing law firms in the United States on the Inc. 5000 list of fastest-growing private companies.
Clients range from startups to globally recognized brands, and the firm isn’t afraid to take on work in a variety of sectors—it has experience across industries such as pharmaceuticals, biotechnology, biofuels, medical devices, data security, software, space exploration, and more. Caldwell’s associates and technical specialists have degrees in everything from pharmacy and neuroscience to physics and chemistry to electrical, mechanical, biomedical, and computer engineering. The firm boasts a USPTO allowance rate—the rate at which the USPTO issued patents—of over 99%.
Commit to Be Fit
Caldwell takes pride in fostering an environment of wellness. The firm offers Equinox gym memberships for all employees, recognizing the importance of physical wellness for workplace morale and productivity.

News & Awards

NOTABLE CASES
  • Firm is representing SherryWear, LLC in a patent infringement suit against Nike, Inc. for Nike's willful infringement of eight SherryWear patents.
  • Developed patent portfolios valued over $20B in the aerospace and defense industries.
  • $250M worth of pro bono work for incarcerated individuals over the last 3 years.
  • Firm is defending SHO Products LLC and Masterminded, Inc. in a patent infringement suit brought by Puff Corp.
AWARDS & ACCOLADES
  • World Changing Ideas: Caldwell Cares, 2022—Fast Company
  • Best in Business List—Legal Category, 2022—Inc.
  • Inc. Regionals Northeast—2023
  • Patent 1000, 2023—IAM 1000
  • Inc. 5000—2023

Why Work Here

Discover Caldwell
Meet the Team: Associate, Rafael Pereira
Learn More
Caldwell

200 Clarendon Street
59th Floor
Boston, MA 02116
Phone: (617) 577-3963

Firm Stats

Global Managing Partner: Keegan M. Caldwell, PhD
Partner & Director: Katherine Rubino, PharmD (Life Sciences Practice Group); Micah Drayton (Technology Practice Group); Marcus Wolter (Corporate Practice)
Total No. Attorneys (2024):
1 - 50
No. of Partners Named 2023:
1
Billable-Hour Requirement:
1,800

Base Salary

1st year: $175,000 Summer Associate: $150,000

Employment Contact

Lois Artz
Director of Human Resources
lois@caldwelllaw.com
(857) 302-6132
General recruiting email: lois@caldwelllaw.com

No. of U.S. Offices: 2

No. of International Offices: 1

Major Office Locations

Boston, MA
Los Angeles, CA
London

Major Departments

Brand Protection
Licensing
Patent Litigation
Patent Office Litigation & Post-Grant Procedures
Patent Portfolio Strategy & Management
Patent Prosecution
Trademark Litigation and Counseling
Trade Secret
Litigation
Corporate & Commercial Litigation
Early Stage and Growth Equity Investments
JVs and Mergers & Acquisitions
Technology & IP Transaction
Life Sciences Intellectual Property
Patent Infringement Litigation
Technology & IP Transaction
Fintech
*See firm website for complete list of practice areas and industries.

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