WSGR logoWSGR logo
WSGR logo
  • Experience
  • People
  • Insights
  • About Us
  • Careers

  • Practice Areas
  • Industries

  • Corporate
  • Intellectual Property
  • Litigation
  • Patents and Innovations
  • Regulatory
  • Technology Transactions

  • Capital Markets
  • Corporate Governance
  • Corporate Life Sciences
  • Derivatives
  • Emerging Companies and Venture Capital
  • Employee Benefits and Compensation
  • Energy and Climate Solutions
  • Executive Advisory Program
  • Finance and Structured Finance
  • Fund Formation
  • Greater China
  • Mergers & Acquisitions
  • Private Equity
  • Public Company Representation
  • Real Estate
  • Restructuring
  • Shareholder Engagement and Activism
  • Tax
  • U.S. Expansion
  • Wealthtech

  • Special Purpose Acquisition Companies (SPACs)

  • Environmental, Social, and Governance

  • AI and Data Center Infrastructure
  • Energy Regulation and Competition
  • Project Development and M&A
  • Project Finance and Tax Credit Transactions
  • Sustainability and Decarbonization
  • Transportation Electrification

  • U.S. Expansion Library and Resources

  • Post-Grant Review
  • Trademark and Advertising

  • Antitrust Litigation
  • Arbitration
  • Board and Internal Investigations
  • Class Action Litigation
  • Commercial Litigation
  • Consumer Litigation
  • Corporate Governance Litigation
  • Employment Litigation
  • Executive Branch Updates
  • Government Investigations
  • Internet Strategy and Litigation
  • Patent Litigation
  • Securities Litigation
  • State Attorneys General
  • Supreme Court and Appellate Practice
  • Trade Secret Litigation
  • Trademark and Copyright Litigation
  • Trial
  • White Collar Crime

  • Advertising, Promotions, and Marketing
  • Antitrust and Competition
  • Committee on Foreign Investment in the U.S. (CFIUS)
  • Communications
  • Data, Privacy, and Cybersecurity
  • Export Control and Sanctions
  • FCPA and Anti-Corruption
  • FDA Regulatory, Healthcare, and Consumer Products
  • Federal Trade Commission
  • Fintech and Financial Services
  • Government Contracts
  • National Security and Trade
  • Payments
  • State Attorneys General
  • Strategic Risk and Crisis Management
  • Tariffs, Customs, and Import Compliance

  • Antitrust and Intellectual Property
  • Antitrust Civil Enforcement
  • Antitrust Compliance and Business Strategy
  • Antitrust Criminal Enforcement
  • Antitrust Litigation
  • Antitrust Merger Clearance
  • European Competition Law
  • Third-Party Merger and Non-Merger Antitrust Representation

  • Anti-Money Laundering
  • Foreign Ownership, Control, or Influence (FOCI)
  • Team Telecom

  • AI in Healthcare
  • Animal Health
  • Artificial Intelligence and Machine Learning
  • Aviation
  • Biotech
  • Blockchain and Cryptocurrency
  • Clean Energy
  • Climate and Clean Technologies
  • Communications and Networking
  • Consumer Products and Services
  • Data Storage and Cloud
  • Defense Tech
  • Diagnostics, Life Science Tools, and Deep Tech
  • Digital Health
  • Digital Media and Entertainment
  • Electronic Gaming
  • Fintech and Financial Services
  • FoodTech and AgTech
  • Global Generics
  • Internet
  • Life Sciences
  • Medical Devices
  • Mobile Devices
  • Mobility
  • NewSpace
  • Quantum Computing
  • Semiconductors
  • Software

  • Offices
  • Country Desks
  • Events
  • Community
  • Our Diversity
  • Sustainability
  • Our Values
  • Board of Directors
  • Management Team

  • Austin
  • Boston
  • Boulder
  • Brussels
  • Century City
  • Hong Kong
  • London
  • Los Angeles
  • New York
  • Palo Alto
  • Salt Lake City
  • San Diego
  • San Francisco
  • Seattle
  • Shanghai
  • Washington, D.C.
  • Wilmington, DE

  • Law Students
  • Judicial Clerks
  • Experienced Attorneys
  • Patent Agents
  • Business Professionals
  • Alternative Legal Careers
  • Contact Recruiting
Sarah Ko
Patent Agent
Patents and Innovations
Washington, D.C.
sko@wsgr.com

D202-802-7866

Download vCard
Open PDF

Sarah Ko is a patent agent in the Washington, D.C., office of Wilson Sonsini Goodrich & Rosati, where she is a member of the patents and innovations practice. Her practice focuses on patent prosecution and freedom to operate for clients in a variety of fields.

Prior to joining Wilson Sonsini, Sarah was a research fellow at the Institute for Basic Science (IBS) in Korea and also worked as a postdoctoral researcher at the National Institute of Standards and Technology after she received her Ph. D. at Purdue University. She was a recipient of the “Outstanding Researcher Award” at the IBS.

Sarah has extensive research experience in designing and constructing various nanostructures using DNA and RNA molecules for their biomedical and optical applications. Her research projects include but are not limited to, the construction of cancer cell-targeting drug carriers and the control of the fluorescence lifetime of quantum dots using DNA nanostructures. She was also a lead scientist in the development of synthetic strategies for porous carbon materials. She has one patent and several research papers published as a lead author in high-profile scientific journals.

Experience

Sarah Ko is a patent agent in the Washington, D.C., office of Wilson Sonsini Goodrich & Rosati, where she is a member of the patents and innovations practice. Her practice focuses on patent prosecution and freedom to operate for clients in a variety of fields.

Prior to joining Wilson Sonsini, Sarah was a research fellow at the Institute for Basic Science (IBS) in Korea and also worked as a postdoctoral researcher at the National Institute of Standards and Technology after she received her Ph. D. at Purdue University. She was a recipient of the “Outstanding Researcher Award” at the IBS.

Sarah has extensive research experience in designing and constructing various nanostructures using DNA and RNA molecules for their biomedical and optical applications. Her research projects include but are not limited to, the construction of cancer cell-targeting drug carriers and the control of the fluorescence lifetime of quantum dots using DNA nanostructures. She was also a lead scientist in the development of synthetic strategies for porous carbon materials. She has one patent and several research papers published as a lead author in high-profile scientific journals.

Education
  • Ph.D., Chemistry, Purdue University
  • M.S., Chemistry, Ewha Womans University
  • B.S., Chemistry, Ewha Womans University
Admissions
  • U.S. Patent and Trademark Office
Credentials
Education
  • Ph.D., Chemistry, Purdue University
  • M.S., Chemistry, Ewha Womans University
  • B.S., Chemistry, Ewha Womans University
Admissions
  • U.S. Patent and Trademark Office

Select Publications

  • Co-author, “Variation of nitrogen species in zeolite-templated carbon by low-temperature carbonization of pyrrole and the effect on oxygen reduction activity,” 7 J. Mater. Chem. A 8353-8360, 2019

  • Lead author, “Ultramicroporous carbon synthesis using lithium-ion effect in ZSM-5 zeolite template,” 30 Chem. Mater. 6513-6520, 2018

  • Lead author, “Nanocage-confined synthesis of fluorescent polycyclic aromatic hydrocarbons in zeolite,” 140 J. Am. Chem. Soc. 7101-7107, 2018

  • Lead author, “Qdot Fluorescence Lifetime Engineering by DNA Origami Constructs,” 52, Angew. Chem. Int. Ed. 1193-1197, 2013

  • Lead author, “Nanomanufacturing with DNA Origami: Factors Affecting the Kinetics and Yield of Qdot Binding,” 22, Adv. Funct. Mater. 1015-1023, 2012

  • Lead author, “Synergistic Self-assembly of RNA and DNA Molecules,” 2 Nature Chem. 1050-1055, 2010

  • Co-author, “Surface-Mediated DNA Self-Assembly,” 131, J. Am. Chem. Soc. 13248-13249, 2009

  • Co-author, “Symmetry Controls the Face Geometry of DNA Polyhedra,” 131 J. Am. Chem. Soc. 1413-1415, 2009

  • Lead author, “Reversible switching of pRNA activity on the DNA packaging motor of bacteriophage,” 130 J. Am. Chem. Soc. 17684-17687, 2008

Insights

Select Publications

  • Co-author, “Variation of nitrogen species in zeolite-templated carbon by low-temperature carbonization of pyrrole and the effect on oxygen reduction activity,” 7 J. Mater. Chem. A 8353-8360, 2019

  • Lead author, “Ultramicroporous carbon synthesis using lithium-ion effect in ZSM-5 zeolite template,” 30 Chem. Mater. 6513-6520, 2018

  • Lead author, “Nanocage-confined synthesis of fluorescent polycyclic aromatic hydrocarbons in zeolite,” 140 J. Am. Chem. Soc. 7101-7107, 2018

  • Lead author, “Qdot Fluorescence Lifetime Engineering by DNA Origami Constructs,” 52, Angew. Chem. Int. Ed. 1193-1197, 2013

  • Lead author, “Nanomanufacturing with DNA Origami: Factors Affecting the Kinetics and Yield of Qdot Binding,” 22, Adv. Funct. Mater. 1015-1023, 2012

  • Lead author, “Synergistic Self-assembly of RNA and DNA Molecules,” 2 Nature Chem. 1050-1055, 2010

  • Co-author, “Surface-Mediated DNA Self-Assembly,” 131, J. Am. Chem. Soc. 13248-13249, 2009

  • Co-author, “Symmetry Controls the Face Geometry of DNA Polyhedra,” 131 J. Am. Chem. Soc. 1413-1415, 2009

  • Lead author, “Reversible switching of pRNA activity on the DNA packaging motor of bacteriophage,” 130 J. Am. Chem. Soc. 17684-17687, 2008

Biological Sciences and Biotechnology

  • Bioconjugation

Therapeutics and Drug Discovery

  • Drug delivery
  • Small molecules

Diagnostics and Medical Devices

  • Biomedical devices
  • Medical devices

Chemistry and Material Science

  • Catalysis
  • Chemistry
  • Green chemistry
  • Materials chemistry
  • Nanochemistry

Engineering and Technology

  • Materials science

Miscellaneous

  • Fluorescence microscopy
Technical Fluency

Biological Sciences and Biotechnology

  • Bioconjugation

Therapeutics and Drug Discovery

  • Drug delivery
  • Small molecules

Diagnostics and Medical Devices

  • Biomedical devices
  • Medical devices

Chemistry and Material Science

  • Catalysis
  • Chemistry
  • Green chemistry
  • Materials chemistry
  • Nanochemistry

Engineering and Technology

  • Materials science

Miscellaneous

  • Fluorescence microscopy
Focus Areas
  • Intellectual Property
  • Patents and Innovations
Recent Insights
Client Highlights
Firm Advises Sirius Therapeutics on Patent Matters Related to $50 Million Series B2 Financing
On May 9, 2025, biotechnology company Sirius Therapeutics announced that it has successfully completed nearly $50 million Series B2 financing. A corporate venture capital firm led the financing round and was joined by new investor BioTrack Capital and existing investors OrbiMed, Creacion Ventures, and Hankang Capital. Wilson Sonsini Goodrich & Rosati advised Sirius Therapeutics on patent matters related to the transaction.
Learn More
Client Highlights
Firm Advises Evidity on IP Matters Related to GT MedTech’s $37 Million Series D
On January 16, 2025, GT Medical Technologies, Inc. (GT MedTech), a medical device company with a corporate purpose of improving the lives of patients with brain tumors, announced that it has completed a $37 million first close of a Series D financing round. The financing was led by Evidity Health Capital, alongside new investor Accelmed Partners. Also participating were existing investors MVM Partners, Gilde Healthcare, and Medtech Venture Partners. Wilson Sonsini Goodrich & Rosati advised Evidity Health Capital on IP matters related to the transaction.

The funds will accelerate the completion of the ROADS clinical study that is focused on GammaTile for newly diagnosed brain metastases, and the GESTALT clinical trial for patients with newly diagnosed glioblastomas (GBMs). In addition, the funds will support the continued commercialization of GammaTile®, GT MedTech’s FDA-cleared bioresorbable radiotherapy implant for the treatment of brain tumors.

The Wilson Sonsini team that advised Evidity Health Capital on IP matters included Bill Barrett, Darby Chan, Karl Hudspith, Tess Oram, and Sarah Ko.

For more information, please see the news release.
Learn More
View All
  • people
  • insights
  • about us
  • careers
  • Binder
  • Alumni
  • Mailing List Signup
  • Client FTP Portal
  • Privacy Policy
  • Terms of Use
  • Accessibility
WSGR logo
Twitter
LinkedIn
Facebook
Instagram
Youtube
Copyright © 2026 Wilson Sonsini Goodrich & Rosati. All Rights Reserved.