Justin O. Ehresmann, Ph.D.

Justin O. Ehresmann, Ph.D.

jehresmann@lrrc.com vCard
626.577.8800 fax
655 North Central Avenue
Suite 2300
Glendale, CA 91203

Justin O. Ehresmann, Ph.D., is a partner in Lewis Roca‘s Intellectual Property practice group. Clients turn to Justin for his knowledge of OLEDs (organic light-emitting diodes), solar cells, fuel cells, microstructures, polymers, pharmaceuticals, and catalysts. Of particular interest to Justin are chemical production and new catalyst development.

Justin has extensive research experience relating to heterogeneous catalysis, inorganic chemistry, solid state nuclear magnetic resonance spectroscopy, computational chemistry, microporous materials, and zeolites. He is co-author of numerous scientific publications in leading Chemistry journals (detailed below).

Justin received his Ph.D. in Chemistry and his undergraduate degree in Environmental Studies from the University of Southern California, enabling him to offer a unique skill set to biotech and chemical firms in need of legal counsel. He serves as an adjunct faculty member of the Environmental Studies Program at the University of Southern California. Justin’s interests include mountain biking, surfing, paddle boarding, and restoring classic cars.

Personal Approach

Justin enjoys working collaboratively with clients to solve complex problems. His calm, patient, and reassuring demeanor inspires confidence and ensures that careful deliberation will lead to sound decision-making.

Justin’s ability to pivot and adapt in situations is an ideal asset in the ever-changing IP world. His clients value his depth of understanding of the science and technology impacting their business and his expert guidance in crafting legal and IP portfolio strategies.

Professional Experience

  • Lewis Roca Rothgerber Christie (legacy firm Christie Parker & Hale LLP), 2009-present
  • Jones Day, Summer Associate, 2008
  • Christie Parker Hale LLP, Summer Associate, 2007

Memberships & Affiliations

  • California Bar Association, Member


  • Co-Author, "An Oft-Studied Reaction That Never Was: Direct Catalytic Conversion of Methanol or Dimethyl Ether to Hydrocarbons On the Solid Acids HZSM-5 or HSAPO-34," Journal of the American Chemical Society 2002, 124, 3844-384.
  • Co-Author, "A Site-Isolated Rhodium-Diethylene Complex Supported On Highly Dealuminated Y Zeolite: Synthesis and Characterization," Journal of Physical Chemistry B 2005, 109, 24236-24243.
  • Co-Author, "Adsorbate Clustering, Proton Transfer, and Electric Field Gradients in Zeolites," Abstracts of Papers of the American Chemical Society 2005, 229, 743
  • Co-Author, "Rhodium Complex With Ethylene Ligands Supported On Highly Dehydroxylated MgO: Synthesis, Characterization, and Reactivity," Langmuir 2006, 22, 490 –496.
  • Co-Author, "Mechanistically Significant Details of the H/D Exchange Reactions of Propene Over Acidic Zeolite Catalysts," Angewandte Chemie International Edition, 2006, 45, 1933-1935
  • Co-Author, "Structural and Mechanistic Investigation of a Phosphate-Modified HZSM-5 Catalyst for Methanol Conversion," Langmuir 2006, 22, 4846-4852.
  • Co-Author, "Experimental Evidence From H/D Exchange Studies For the Failure of Direct C-C Coupling Mechanisms in the Methanol-to-Olefin Process Catalyzed by HSAPO-34," Angewandte Chemie International Edition 2006, 45, 3133-3136.
  • Co-Author, "Functionalization of Zeolite ZSM-5 By Hydrosilylation and Acetone Coupling: Synthesis, MAS NMR, and Theory," Journal of Physical Chemistry B, 2006, 110, 14598-14603.
  • Co-Author, "Molecular Heterogeneous Catalysis: A Single-Site Zeolite-Supported Rhodium Complex for Acetylene Cyclotrimerization," Chemistry - A European Journal, 2007, 13, 7267-7559.
  • "Adsorbate Clustering and Proton Transfer in Zeolites: NMR Spectroscopy and Theory," ChemPhysChem, 2006, 7, 114-116.
  • Co-Author, "Theoretical and Experimental Investigation of the Effect of Proton Transfer On the 27Al MAS NMR Line Shapes of Zeolite-Adsorbate Complexes: An Independent Measure of Solid Acid Strength," Journal of the American Chemical Society 2002, 124, 8386-8391.
  • Co-Author, "Evidence from NMR and EXAFS Studies of a Dynamically Uniform Mononuclear Single-Site Zeolite-Supported Rhodium Catalyst," Angewandte Chemie International Edition 2006, 45, 574-576.

Other Info


J.D., Loyola Law School, 2009
Ph.D., University of Southern California, 2005, Chemistry
B.S., University of Southern California, 2000, Environmental Studies

Bar Admissions

California, 2009

Court Admissions

U.S. Patent and Trademark Office