Jelena Janjic Libby

, Ph.D.


Jelena J. Libby, Ph.D. is a partner with McDonnell Boehnen Hulbert & Berghoff LLP whose practice focuses on patent and trademark portfolio development and management, opinion work, agreements and client counseling.  Dr. Libby represents large and mid-size multinational companies, science-based startups, universities, and research institutions.

Dr. Libby’s technical experience extends to a wide variety of chemical, pharmaceutical, and related technologies, including pharmaceuticals and related formulations, natural products, polymers, catalysts, materials, photonics, semiconductor, cosmetics and personal care products, food and beverage chemistry, and petroleum chemistry.  Her practice encompasses all aspects of patent prosecution, reissue, reexamination, freedom-to-operate and due diligence opinion, strategy development, and counseling, as well as trademark prosecution and counseling.  Dr. Libby also has experience with various aspects of inter partes review and patent litigation involving the Hatch-Waxman Act, including working with expert witnesses, assisting with fact and expert discovery, motion practice and legal research.

Prior to joining MBHB, Dr. Libby was a Graduate Research Assistant at the University of Chicago where she focused on synthetic organic and medicinal chemistry while developing a new anti-cancer drug and eleven analogs. Her research also involved molecular biology, Saccharomyces cerevisiae genetics, and proteomics to identify biological target of the anti-cancer drug.  Dr. Libby also synthesized and characterized acrylic adhesives as a Technical Aide for 3M Adhesives Technology Center.  Her undergraduate research investigated electronic properties of ferrocene-capped furan derivatives.

Dr. Libby is an author of various publications, including publications in Nature Chemical Biology and Journal of the American Chemical Society, and is listed as an inventor on an issued U.S. patent.


  • J.D., Chicago-Kent College of Law
  • Ph.D., University of Chicago,

    Organic Chemistry; Doctoral Thesis: “Synthesis and biological targets of Leucascandrolide A”

  • M.S., University of Chicago,

    Organic Chemistry

  • B.A., Hamline University,

    Chemistry and Management, Cum Laude

Bar Admissions
  • U.S. Patent & Trademark Office
  • Illinois

Published Articles

“Synthesis Enables Identification of the Cellular Target of Leucascandrolide A and Neopeltolide.” Nature Chemical Biology, 2008, 4, 418 – 424.

“Synthesis of Leucascandrolide A via a Spontaneous Macrolactolization.” Journal of the American Chemical Society, 2002, 124, 13670-13671.

“Synthesis of Leucascandrolide A.”, Pure and Applied Chemistry, 2005, 77, 1161-1169 (invited submission, IUPAC ICOS-15, Nagoya, Japan).