Tyler James Sisk, J.D., Ph.D.
Founding Shareholder
Tyler excels in securing patents across various fields, from life sciences to intelligent mechanical systems, and has significant experience in IP litigation and capital fundraising, co-founding Casimir Jones, S.C. in 2007.

Tyler gratefully acknowledges that he has been blessed to be able to understand and to anticipate the evolution of cutting edge technologies while representing clients, both inside and outside the life sciences. For example, he has also secured hundreds of patents in non-life science subject matter including intelligent mechanical designs and systems, furniture and furniture components, and taste testing devices and systems.
Tyler has represented clients at the USPTO, Patent Trial and Appeal Board, federal courts, and in mediation/arbitration proceedings.
Dr. Sisk has participated on the IP end of public offerings and capital raises nearing $1B.
He co-founded Casimir Jones, S.C. in 2007.
General Practice Area
Tyler contemplatively and enthusiastically works with clients to formulate and implement successful patent filing, business negotiation, and protection/enforcement strategies. Tyler provides counseling regarding:
- Patentability and FTO
- Invalidity and noninfringement
- Due diligence reviews
- Litigation and litigation avoidance
Focused Practice Areas
Tyler’s formal training in microbiology and immunology provides a foundation for understanding and expertise in a broad range of life science related IP including antibody technologies, CMB technologies, cancer therapeutics and diagnostics, immunotherapies, immunomodulators, vaccines, and recombination technologies such as CAR-T cells. Tyler has secured patent protection in these and other life science fields in the United States and internationally.
- Founding Shareholder, Casimir Jones, S.C., 2007 to present
- Associate, Medlen & Carroll, LLP, San Francisco, CA, Madison, WI, Cambridge, MA
- Technology Specialist, Medlen & Carroll, LLP
- Summer Clerkship, Medlen & Carroll, LLP
- Summer Internship, Office of Technology Transfer and Corporate Research, University of Michigan
- Admitted Committee, Program in the Biomedical Sciences, University of Michigan Medical School
- Teaching Assistant, Department of Microbiology and Immunology, University of Michigan Medical School
- Research Associate, Department of Dairy Science, University of Wisconsin
- Research Specialist, Department of Anesthesiology, University of Wisconsin Medical School
- J.D., Ave Maria School of Law, 2004
- Ph.D., University of Michigan, Microbiology and Immunology, 2001
- B.S., Marquette University, Biology, 1994
- United States Court of Appeals, Federal Circuit
- United States District Court, Eastern District of Wisconsin
- United States District Court, Western District of Wisconsin
- United States District Court, Western District of Michigan
- United States Patent and Trademark Office
- State Bar of Wisconsin
- Guest Lecturer, University of Wisconsin, Madison, Special Topics in Biomedical Engineering, BME 601, “Introduction to Patents”
- Guest Lecturer, University of Wisconsin, Madison, Special Topics in Biomedical Engineering, BME 601, “Introduction to Patents”
- Guest Lecturer, University of Michigan Medical School, Postdoctoral fellowship seminar series, “Alternative Scientific Careers, Patent Jobs”