Joseph C. Suhadolnik, Ph.D.

Patent Agent

Joseph C. Suhadolnik is an experienced patent practitioner and former senior research chemist with a very strong background in organic and polymer chemistry, dyes/pigments, industrial coatings, UV absorbers, batteries and other energy storage devices, electronic displays and image preservation. Joe has 10 years of experience as an in-house patent agent at Ciba Specialty Chemicals, BASF, and, most recently, Chemtura Corporation. Additionally, he has over 15 years of experience in industrial research and is an inventor on more than 65 issued US patents. As a researcher and patent agent, Joe has worked closely with technology and business directors, academic consultants, and with chemists involved in basic research and discovery, testing and product development, and scale-up of plant processes, making him effective in communicating across all functions of an organization involved with the development and maintenance of an IP portfolio. Joe has drafted and prosecuted patent applications in the US, managed patent prosecution in countries outside the US, and counselled clients on a variety of IP issues.

  • Successfully prosecuted more than 200 US patent applications, and prepared more than 80 new patent applications
  • Managed world wide patent portfolio for international specialty chemical company with business in both industrial and consumer products
  • Developed and presented materials to educate inventors on patentability issues, understanding patent language, claim construction and validity,
  • Analyzed literature, patent landscapes and individual patent portfolios used in determining freedom-to-operate for new product introduction, evaluation of research proposals, and possible business acquisition
  • Provided technical support and patent analysis for asserting patent claims against infringers, refuting infringement claims from outside parties, and in negotiation of favorable settlements
  • As a research chemist was active in the invention, development and introduction of commercial products sold for stabilization of industrial and automotive coatings, thermoplastics, personal care and household formulations
  • Developed patent strategies for antioxidant, flame retardant, energy storage, image protection and consumer care product lines
  • Developed highly stable UV absorbers for automotive coatings and light stabilizers for colored candle wax that have become standards in their respective industries
Technology Areas

Fields of technology include organic synthesis, polymer stabilization, coating technology, colorants, lubricants, photo-chemistry, free radical chemistry, printing technology, energy storage, and electrochromic materials

Selected Publications and Presentations

Twisted Intramolecular Charge Transfer States in 2-Aryl-Benzotriazoles: Fluorescence Deactivation via Intramolecular Electron Transfer Rather than Proton Transfer, Maliakal, A.; Lem, G.; Turro, N.J.; Ravichandran, R.; Suhadolnik, J.C.; DeBellis, A. D.; Wood, M, G.; Lau, J., Journal of Physical Chemistry A - J PHYS CHEM A , vol. 106, no. 34, pp. 7680-7689, 2002

Unexpected Electronic Effects on Benzotriazole UV Absorber Photostability: Mechanistic Implications Beyond Excited State Proton Transfer, Suhadolnik, J.; DeBellis, A. D.; Hendricks-Guy, C.; Iyengar, R.; Wood, M., Journal of Coatings Technology, 2002, vol. 74, 55.

Unexpected Electronic Effects on Benzotriazole UV Absorber Photostability: Mechanistic Implications Beyond Excited State Proton Transfer, Suhadolnik, J.; DeBellis, A. D.; Hendricks-Guy, C.; Iyengar, R.; Wood, M., 222nd American Chemical Society National Meeting Aug. 2000, Washingto DC

Pronounced Conformational Preference of the 3’-alpha-Cumyl Substituent in 2-(2’-Methoxy-3’-Cumylphenyl)Benzotriazole, DeBellis, A. D.; Rodebaugh, R.K.; Suhadolnik, J.; Hendricks-Guy, C., Journal of Physical Organic Chemistry (1997) vol. 10, 107

Computer Simulations of the Pronounced Conformational Preference of the 3’-Substituents in 2-(2’-Hydroxyphenyl)Benzotriazole UV Absorbers: Correlation wiyj UVA Photopermanence in Coatings, DeBellis, A. D.; Iyengar, R.; Kaprinidis, N. K.; Suhadolnik, J., “Service Life Prediction Methodology and Metrologies” Symposium, ACS Symposium Series 805, 453, American Chemical Society: Washinton DC, 2002; presented Nov., 1999, Montererey, CA.

Role of Media Polymer Chemistry on Dye/Polymer Interactions and Light Stabilit of Ink Jet Graphics, Naisby, A.; Suhadolnik, J,; DeBellis, A.; Pennant, D.; Renz, W.Proceedings NIP 18th Conference on Digital Printing

Photophysics of Polyethylene Terphthalate, Rufus, I.B.; Hoyle, C.E.; Suhadolnik, J.; J.; Hendricks-Guy, C., Polymer Preprint American Chemical Society, Div. Polym. Chem., 1996, 37(1), 695

Joseph can be reached at


2005, Registered to practice before the U.S. Patent and Trademark Office


1987, Rensselaer Polytechnic Institute, Postdoctoral Research Associate
1985, University of Minnesota, Ph.D., Organic Chemistry
1980, University of Pennsylvania, B.A., Chemistry