Eric F. Greenberg is Principal Attorney of the law firm Eric F. Greenberg, P. C. He concentrates his practice in food and drug law, packaging law, and commercial litigation.

His food and drug work has included regulatory counseling, new product development, negotiation with the U.S. Food and Drug Administration and state agencies, handling recalls, and defending enforcement actions. His packaging work is a pioneering approach to legal representation for members of the packaging industry. He counsels a wide range of consumer product companies, packaging manufacturers, package design firms, and others on regulatory and labeling requirements, and handles related contractual and litigation matters.

Eric is a member of the Adjunct Faculty of the Chicago-Kent College of Law, where he teaches Food and Drug Law, and of California Polytechnic State University (Cal Poly), where he teaches graduate and undergraduate courses in Packaging Laws and Regulations. He serves as legal columnist for Packaging World Magazine.

As part of his development of packaging law, Eric wrote Guide to Packaging Law, first published in 1996, with a Second Edition published in October 2007. It is the first reference book about law for those in the packaging business. He is a frequent speaker and writer on food and drug law and packaging law topics.