Kathryn L. Hester, Ph.D.

Kathryn L. Hester, Ph.D.

Dunlap Codding Risk Manager—Practice Group Leader—Life Sciences Group


Kathryn L. Hester, Ph.D., is a patent agent registered to practice before the United States Patent and Trademark Office. Kathryn focuses on patent preparation and prosecution before the US Patent and Trademark Office as well as foreign patent offices.  She has extensive experience providing strategic and tactical patent counseling and portfolio management assistance to a broad base of clients ranging from individual inventors, high-tech startup companies, universities, and research institutions to large chemical, pharmaceutical, life science, medical device, nutrition, and manufacturing companies.

Her technological focus includes all areas of biotechnology, pharmaceutical compositions, molecular diagnostics and techniques, medical devices and equipment, skin care products, process technologies, and the chemical and mechanical arts.

As the firm's Risk Manager, Kathryn is responsible for implementing and enforcing best policies and procedures for the firm (including adherence to each individual client's guidelines for outside counsel) as well as overseeing all docketing matters.  Kathryn also leads the firm's Life Sciences Group.

Bar Admissions 
  • Registered to practice before the United States Patent and Trademark Office

Kathryn graduated from the University of Oklahoma Health Sciences Center with a Ph.D. in Biochemistry and Molecular Biology. Her graduate studies, which were funded by a STAR Graduate Fellowship from the United States Environmental Protection Agency, focused on the regulation of gene expression, and in particular, the proteins involved in catabolite repression control of enzymes involved in amino acid metabolism (the bkd operons) in Pseudomonas putida and Pseudomonas aeruginosa. Six publications resulted from her graduate work, including several papers in the Journal of Bacteriology and the European Journal of Biochemistry and chapters in Methods in Enzymology and Biochemistry and Physiology of Thiamin-Diphosphate Enzymes.

  • Hester KL, Luo J, Sokatch JR. Purification of Pseudomonas putida branched-chain keto acid dehydrogenase E1 component. Methods Enzymol. 324:129-38 (2000). 
  • Hester KL, Madhusudhan KT, Sokatch JR. Catabolite repression control by crc in 2xYT medium is mediated by posttranscriptional regulation of bkdR expression in Pseudomonas putida. J Bacteriol. 182(4):1150-3 (2000). 
  • Hester KL, Lehman J, Najar F, Song L, Roe BA, MacGregor CH, Hager PW, Phibbs PV Jr, Sokatch JR. Crc is involved in catabolite repression control of the bkd operons of Pseudomonas putida and Pseudomonas aeruginosa. J Bacteriol. 182(4):1144-9 (2000). 
  • Madhusudhan KT, Hester KL, Friend V, Sokatch JR. Transcriptional activation of the bkd operon of Pseudomonas putida by BkdR. J Bacteriol. 179(6):1992-7 (1997). 
  • Hester, KL, Luo, J, Sokatch, JR. An unusual translation of the beta-subunit of Pseudomonas putida branched-chain keto acid dehydrogenase. H. Bisswanger and A. Schellenberger (Eds). In Biochemistry and Physiology of thiamin-diphosphate enzymes. pp. 374-381 (1996). 
  • Hester K, Luo J, Burns G, Braswell EH, Sokatch JR. Purification of active E1 alpha 2 beta 2 of Pseudomonas putida branched-chain-oxoacid dehydrogenase. Eur J Biochem. 233(3):828-36 (1995).
  • American Association for the Advancement of Science 
  • American Society for Microbiology 
  • American Society for Biochemistry and Molecular Biology 
  • American Chemical Society 
  • American Intellectual Property Law Association 
  • Intellectual Property Section of the Oklahoma Bar Association, Associate Member