Jasmine Ya-Fen Chen, PhD, Esq.  


(O) (408) 900-8900; (F) (415) 873-3288

The law firm of JAS Law, LLP offers the best lawyers in Corporate Transaction and Intellectual Property matters. We pride ourselves in maintaining a small-firm feel by treating each case with care and consideration. We’ve hand-picked a high-quality team of law professionals qualified to successfully resolve a variety of client matters.  No issue is too big or too small. If you have a Corporate or IP legal problem, our experts can help you find a solution.

Jasmine Ya-Fen Chen Managing Partner

Please email us at info@jaslawllp.com

or call us at +1 (408) 900-8900

Jasmine Ya-Fen Chen, PhD, Esq.    

Please email us at info@jaslawllp.com

or call us at +1 (408) 900-8900

Attorneys at Law

Contact us today for a confidential initial consultation!

Copyright of JAS Law LLP

Technical Fields


  • Nano-Technologies
  • Life Sciences, Biotechnology, Biologics
  • Pharmaceuticals Drugs, Small Chemical Molecules
  • Biomedical Sciences, Immunology, Vaccines, Therapeutics
  • Diagnostics, Assay and Kits, Lab tools, Instruments
  • Immunology, Cancer Research
  • Recombinant DNA, Molecular Biology, Protein Biochemistry
  • Memory devices, Device Fabrication Processes 
  • Clean Energy, Solar Cells
  • Chemical Processing
  • Semiconductor Fabrication Processes


  • Medical Devices, Method of Use
  • Processing Systems and Equipment,
  • Mechanical Hardware and Structures
  • Business Methods
  • Language Recognition

Ya-Fen (Jasmine) Chen provides high quality professional legal services to companies, academic institutions and investment groups.  Jasmine's legal practice focuses on all areas of intellectual property (IP) counseling, including U.S. and international patent prosecution, strategic patent portfolio management and monetization, pre-litigation due diligence, investment and merger and acquisition (M&A) due diligence, technology transfer, business alliance, patent in-licensing and out-licensing, freedom to operate analysis, FDA-related IP issues, enforcement of patent rights, patentability searches, patent opinions, trademark registration, and trade secret protection.  Her law office also provides part-time or virtual in-house counsel services. Jasmine applies business sense and cost-effectiveness in counseling her clients on IP legal matters.  The quality of her work product fits those clients looking for a close, efficient working relationship.

A PhD scientist by training, Jasmine has more than 18 years of patent law practice experience covering a wide range of technologies, including biotech, pharmaceutical, chemical processing, medical devices, semiconductor processing, biomedical life sciences, clean energy, solar cells, memory devices, mechanical structures, business methods, hardware and processes, methods of use, and various nanotechnologies.  Jasmine is adept at efficiently describing innovations inventions. She is engaging, organized, and motivated, and she thrives on handling inventive technologies.  Her legal experience includes working in a patent specialty law firm in Palo Alto, California, involving client counseling for business start-ups, complex patent portfolio management for large companies, patent strategy for new drug leads and development pipelines, budgeting and prioritizing technology innovations, IP due diligence support, non-infringement and invalidity opinion practice, M&A, pre-litigation investigation, and related patent issues in NDA, ANDA, and IND for new drug applications submitted to the U.S. Food and Drug Administration (FDA).

Jasmine is fluent in Mandarin Chinese. She is registered to practice before the United States Patent and Trademark Office (USPTO) and admitted to practice law in California. Jasmine is a member of the American Intellectual Property Law Association (AIPLA). She earned a J.D. from the University of San Francisco Law School and obtained a special Certificate (with Honors) in Intellectual Property and Technology Law. Jasmine has a Ph.D. in Microbiology from Cornell University and a B.S. in Plant Pathology and Entomology from National Taiwan University. She was a judicial extern at San Mateo County Superior Court.  Jasmine was a postdoctoral fellow in the Division of Immunology and Transplantation Biology, Department of Pediatrics, Stanford University Medical Center where she was awarded an American Society of Transplant Physicians-SangStat Fellowship.

Legal Practice

Intellectual Property

  • U.S. and International Patent Prosecution
  • US Utility Patents, Design Patents
  • Patentability, Patent Landscape Analysis
  • US Federal and state Trademark Registration
  • Strategic Patent Portfolio Management and Monetization
  • Trade Secret Protective Measures

Corporate Transaction

  • Corporate Formation, Employee Agreement, Employee Confidentiality and Invention Assignment Agreements
  • Confidentiality Disclosure Agreement (CDA), Non-Disclosure Agreement (NDA)
  • International Merger & Acquisition (M&A), International Business Alliance
  • Asset Acquisition & Joint Venture
  • Patent Licensing, Technology Licensing, Technology Transfer
  • Business Contract Negotiation

Commercial Litigation, Trade Secret Litigation and Due Diligence

  • International Business Disputes, Commercial LItigation, Breach of Contracts
  • Pre-Litigation Investigation, Pre-Litigation Counseling
  • Employee Mobility, Trade Secrete Litigation
  • IP Due Diligence
  • Investment and M&A Due Diligence
  • FDA Practice for Pharmaceutical Drugs and Biologics
  • Freedom to Operate, Competitive Intelligence
  • Patentability Opinions
  • Patent Validity and Infringement Opinions