Profiles > Gregory A. Duff

Gregory A. Duff

T: 312.222.6315
F: 312.222.6335

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Gregory Duff is Of Counsel at Rakoczy Molino Mazzochi Siwik LLP.  Mr. Duff, who has a degree in Pharmacy, has substantial litigation and patent counseling experience.  His practice focuses on litigating Hatch-Waxman patent disputes.

Intellectual Property Litigation and Counseling
Mr. Duff’s practice focuses primarily on Hatch-Waxman patent litigation.  He has considerable experience with all aspects of patent litigation, from pre-suit strategy development through trial and the appellate process.  His cases involve a wide assortment of pharmaceutical products, including solid oral dosage forms and a variety of topical dosage forms.  His litigation experience includes matters involving drugs such as Mucinex® (guaifenesin), Monistat® (miconazole), Olux® (clobetasol foam), Olux E® (clobetasol foam), Evoclin® (clindamycin foam), Men’s Rogaine® (minoxidil foam), Clobex® shampoo (clobetasol shampoo), Clobex® spray (clobetasol spray), Vanos® (fluocinonide cream), and Androgel® (testosterone gel).

For more than a decade, Mr. Duff has been litigating patent and other intellectual property cases for his clients.  In addition to his extensive experience in patent litigation, he has, for example, represented clients in copyright infringement matters and trade secret misappropriation disputes. 

Additionally, Mr. Duff works with clients in preparing freedom to operate opinions, including opinions of patent non-infringement and invalidity.  He is registered to practice before the United States Patent and Trademark Office and has prepared and prosecuted patent applications and applications for trademark registration.

Complex Commercial Litigation
Mr. Duff has significant experience in other types of complex litigation.  He has represented large and small corporations in a variety of commercial matters, ranging from product liability to fraud suits.

Previous Experience
Prior to joining RMMS, Mr. Duff was an associate at Ice Miller LLP and Winston & Strawn LLP.  Before that, Mr. Duff served as a law clerk to the Honorable John Paul Godich, United States Chief Magistrate Judge for the Southern District of Indiana.