Our People
Mark Jansen
Mark Jansen
650-335-7867
mjansen@fenwick.com
Industry Co-Lead
Blockchain & Cryptocurrency , Games
Partner
Intellectual Property
Offices

Silicon Valley

New York

Mark
Jansen
Mark
Jansen
Mark
Jansen
Partner
Intellectual Property
Industry Co-Lead
Blockchain & Cryptocurrency,
Games
Offices

Silicon Valley

New York

Industries
Education & Admissions

J.D., High Tech Law Certificate
Santa Clara University School of Law
with honors

B.A., History
University of California, Los Angeles

Admitted to practice in California, New York and the District of Columbia

Mark works with some of the world’s best-known tech brands to develop worldwide branding strategies, including helping his clients select, develop, expand and protect their valuable IP assets. With a focus on delivering creative and practical business-focused advice, Mark counsels clients in connection with everything from complex trademark acquisitions and multijurisdictional disputes, to global portfolio management, licensing, anti-counterfeiting strategy, and developing domain name portfolios.

Mark has extensive experience working with cutting-edge companies that are improving lives through technological innovation and disrupting industries, including those in the blockchain (NFTs, DeFi, Layer 1, and others), artificial intelligence (AI), virtual, augmented, and mixed reality, computer vision, autonomous vehicle, robotic and e-commerce industries. He also regularly counsels clients in the social media and internet space, both advising platforms in trademark matters and helping brand owners navigate social media.

Mark is recognized as a leading trademark professional by Managing Intellectual Property, which shortlisted him for Trademark Practitioner of the Year - United States in 2023, named him a notable practitioner (2021-2022) and to its Rising Stars list (2019-2020). World Trademark Review’s WTR 1000 recognizes Mark for enforcement and litigation as well as prosecution and strategy in New York. Super Lawyers has honored Mark among the leading intellectual property lawyers in Northern California each year since 2017. In 2022, Mark was recognized as a key lawyer by The Legal 500 in intellectual property: trademarks. Huski.ai's data-driven analysis of USPTO filings ranked Mark as the number one trademark attorney for Web3 in 2022. Mark is active in the International Trademark Association (INTA), the Intellectual Property Owners Association (IPO) and the American Bar Association’s (ABA) Intellectual Property Law Section.

While in law school, Mark was honored with the ABA/BNA Award for Excellence in the Study of Intellectual Property Law, the Witkin Award for Academic Excellence in Intellectual Property and a CALI Excellence for the Future Award. Mark was also lead production editor for the Santa Clara Computer & High Technology Law Journal. He served as a judicial extern for the Honorable Terry J. Hatter Jr. of the U.S. District Court of the Central District of California and also worked as a law clerk for Oracle, Quantum and eBay.

Read more

  • Cisco Systems
  • DocuSign
  • Harry's
  • Meta
  • NVIDIA
  • Oculus VR
  • Palantir
  • Peloton
  • Twitter

  • Cisco Systems
  • DocuSign
  • Harry's
  • Meta
  • NVIDIA
  • Oculus VR
  • Palantir
  • Peloton
  • Twitter

  • 1inch
  • Bored Ape Yacht Club
  • Coinbase
  • Compound Labs
  • DeGods
  • Fractal
  • The Graph
  • Magic Eden
  • Mina Foundation
  • Mysten Labs
  • OpenSea
  • Polkadot and Kusama
  • Polygon
  • Punks Comic (Pixel Vault)
  • Stakefish
  • WeNew
  • World of Women

  • 1inch
  • Bored Ape Yacht Club
  • Coinbase
  • Compound Labs
  • DeGods
  • Fractal
  • The Graph
  • Magic Eden
  • Mina Foundation
  • Mysten Labs
  • OpenSea
  • Polkadot and Kusama
  • Polygon
  • Punks Comic (Pixel Vault)
  • Stakefish
  • WeNew
  • World of Women

  • "Trademarks and Non-Fungible Tokens," USPTO Roundtable, 2023
  • "Developments in Trademark Prosecution," CLE International's IP & Ski, 2023
  • "Trademark Issues in Licensing," Practising Law Institute, 2022
  • "Web3's Evolving Legal Landscape," The Gateway - NFT now, 2022
  • "Intellectual Property Topics in Web3," University of Michigan Law School, 2022
  • "NFTs: Legal and Practical Considerations for Protecting Your Brand," LexisNexis, 2022
  • "Understanding the Intellectual Property License," Practising Law Institute, 2021
  • "Intellectual Property, Regulatory and Ethical Considerations for Artificial Intelligence/Machine Learning Webinar Series," Fenwick, 2021
  • "Landslide: Brand Enforcement in the World of GDPR: Lessons Learned and Best Practices for IP Practitioners," American Bar Association, 2019
  • "Navigating Through the Invention Process: From Idea to Product to Market," USPTO, 2019
  • "Intellectual Property Law Institute: ICANN Developments," Practising Law Institute, 2018
  • "140th Annual INTA Meeting: Panel on Practical Lessons, Takeaways and First-Hand Experience Relating to IP Enforcement in Social Media," INTA, 2018
  • "Mergers, Acquisitions, and Divestitures: Managing Domain Names and Social Media Accounts in Transactions," INTA, 2018
  • "M&A Due Diligence: Key Components and Considerations Explored," The Knowledge Group, 2018

  • "Trademarks and Non-Fungible Tokens," USPTO Roundtable, 2023
  • "Developments in Trademark Prosecution," CLE International's IP & Ski, 2023
  • "Trademark Issues in Licensing," Practising Law Institute, 2022
  • "Web3's Evolving Legal Landscape," The Gateway - NFT now, 2022
  • "Intellectual Property Topics in Web3," University of Michigan Law School, 2022
  • "NFTs: Legal and Practical Considerations for Protecting Your Brand," LexisNexis, 2022
  • "Understanding the Intellectual Property License," Practising Law Institute, 2021
  • "Intellectual Property, Regulatory and Ethical Considerations for Artificial Intelligence/Machine Learning Webinar Series," Fenwick, 2021
  • "Landslide: Brand Enforcement in the World of GDPR: Lessons Learned and Best Practices for IP Practitioners," American Bar Association, 2019
  • "Navigating Through the Invention Process: From Idea to Product to Market," USPTO, 2019
  • "Intellectual Property Law Institute: ICANN Developments," Practising Law Institute, 2018
  • "140th Annual INTA Meeting: Panel on Practical Lessons, Takeaways and First-Hand Experience Relating to IP Enforcement in Social Media," INTA, 2018
  • "Mergers, Acquisitions, and Divestitures: Managing Domain Names and Social Media Accounts in Transactions," INTA, 2018
  • "M&A Due Diligence: Key Components and Considerations Explored," The Knowledge Group, 2018

Mark represents cutting-edge companies disrupting blockchain, AI, virtual, augmented, and mixed reality, computer vision, autonomous vehicle, robotic and e-commerce industries."

Mark represents cutting-edge companies disrupting blockchain, AI, virtual, augmented, and mixed reality, computer vision, autonomous vehicle, robotic and e-commerce industries."

Recognition Recognition Recognition

Recognition Recognition Recognition

Recognition
World Trademark Review

2023

Recognized among the top lawyers in enforcement and litigation as well as prosecution and strategy in New York

Managing Intellectual Property

2019 – 2023

Shortlisted as Trademark Practitioner of the Year - United States (2023), named a notable practitioner (2021-2022) and on its Rising Stars list (2019-2020)

The Legal 500

2022

Recognized as a key lawyer for trademark prosecution

Super Lawyers

2017 – 2022

Consistently honored among the leading intellectual property lawyers in Northern California (each year since 2017) and as Rising Star in intellectual property law (2017-2022)

Huski.ai

2022

Ranked the number one trademark attorney for Web3 by Huski.ai's data-driven analysis of USPTO filings.

Recognition
World Trademark Review

2023

Recognized among the top lawyers in enforcement and litigation as well as prosecution and strategy in New York

Managing Intellectual Property

2019 – 2023

Shortlisted as Trademark Practitioner of the Year - United States (2023), named a notable practitioner (2021-2022) and on its Rising Stars list (2019-2020)

The Legal 500

2022

Recognized as a key lawyer for trademark prosecution

Super Lawyers

2017 – 2022

Consistently honored among the leading intellectual property lawyers in Northern California (each year since 2017) and as Rising Star in intellectual property law (2017-2022)

Huski.ai

2022

Ranked the number one trademark attorney for Web3 by Huski.ai's data-driven analysis of USPTO filings.

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