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Louis DeFilippi, LLC
Independent consulting
Expert biochemist
Expert witness
Award Winning Service the new web presence for Louis DeFilippi, LLC, an independent, international consulting firm based in the greater Chicago Illinois area, serving the USA (Illinois, Michigan, Iowa, Missouri, Wisconsin, Indiana, New York, Florida, etc.), Asia (China, Taiwan, Singapore etc.) and Europe.    


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1-847-925-8524  (USA)  Call during normal business hours, 7:30 AM to 5:30 PM Central Standard Time.


Lou is thorough and an excellent problem solver. He handled a difficult customer while getting the project done on time and on budget.”

Lou was a mentor during my early years at AlliedSignal - he set an outstanding example of integrity and scientific excellence. Over the years I have continued to rely on Lou for advice and expertise. I am familiar with his more recent accomplishments and know that he continues to set high standards for excellence and drive for results.”

News update...

Expert Witness testimony of Dr. Louis DeFilippi at evidentiary hearing found to be “compelling” by judge.  Latex Allergen Reduction, LLC v. Dynarex Corporation:  IN THE UNITED STATES DISTRICT COURT FOR THE NORTHERN DISTRICT OF ILLINOIS EASTERN DIVISION,April 21, 2011,The opinion of the court was delivered by: Elaine E. Bucklo United States District Judge.  

About us

Louis DeFilippi LLC offers honest expert witness, patent infringement, laboratory, production and consulting services in the areas of biochemistry, biocatalysis, bioprocessing, and biotransformations, biological treatment of hazardous waste (environmental), often by the application of immobilized enzymes and immobilized cells, and regulatory compliance (OSHA, EPA, USDA), through the services of Louis DeFilippi, PhD. Click here for more details.  


Key words: Biochemistry expert witness, biochemistry consultant, Protein expert witness, protein consultant, Enzyme expert witness, enzyme consultant OSHA expert witness, OSHA consultant, EPA expert witness, EPA consultant, Regulations expert witness, regulations consultant, Environmental expert witness, environmental consultant, Biological treatment of hazardous waste expert witness

Note, old web site,, has been discontinued


Right, Dr. Louis DeFilippi on assignment, Hangzhou, China (West Lake, 西湖  , in background)