--- title: Patent Litigation and Post-Grant Proceedings date: 2023-06-12T15:35:00-04:00 author: Import Bot canonical_url: "https://www.kelleydrye.com/practices/patent-litigation-and-post-grant-proceedings" section: Services --- # Patent Litigation and Post-Grant Proceedings Given the complexity and expense of patent litigation, expertise and efficiency are equally important. Kelley Drye achieves positive results across the country with a combination of technical acumen, creativity, and business-minded practicality. ![](https://d3iuizmsm2hayf.cloudfront.net/content/uploads/Hero-Objects/laptop_patent.webp?auto=compress%2Cformat&crop=focalpoint&fit=crop&fp-x=0.5&fp-y=0.5&h=1880&q=80&w=1880&s=2e7cb0a89c8896d9f270a7959406b192) - About - Team - Honors - Events Our attorneys have advanced degrees and industry experience in the electrical, mechanical, and chemical fields. Our clients range from multinational companies to entrepreneurial start-ups, including leaders in electronics, computer hardware and software, telecommunications, media, pharmaceuticals, and fashion and retail. ### Patent Litigation Our litigators are equally adept at defending against allegations of infringement as they are asserting patent rights against infringers. Our team has extensive experience in all aspects of patent litigation, including discovery, claim construction, dispositive motions, jury trials, and appeals. We represent clients in patent litigation in trial courts across the country, including the patent-heavy U.S. District Courts for the Western District of Texas and the District of Delaware, as well as in appeals before the U.S. Court of Appeals for the Federal Circuit. We handle bet-the-company cases for defendants and competitor v. competitor cases for plaintiffs. In addition, we are particularly well known for litigating against and negotiating with non-practicing entities. Expert case management is as important as expertise on the merits, and we organize and drive our cases with this in mind. ### Post-Grant Proceedings We represent clients in post-grant review proceedings before the Patent Trial and Appeal Board (PTAB), including in inter partes review proceedings, covered business method review proceedings, post-grant review proceedings and ex parte reexamination. We represent patent holders and challengers in these proceedings, all the way through appeal to the U.S. Court of Appeals for the Federal Circuit. ### Hatch-Waxman Litigation We offer our generic pharmaceutical clients comprehensive representation in all stages of Paragraph IV disputes, including strategic assessment of Abbreviated New Drug Applications (ANDAs), Paragraph IV opinions and notice letters, litigation, appeals and settlements. Recognized by Patexia as a top firm in the field, our patent litigators have strong technical and scientific backgrounds. [ ![](https://d3iuizmsm2hayf.cloudfront.net/content/uploads/Bio-Photos-1200x1200/Yovits_Steve_2025.webp?auto=compress%2Cformat&crop=focalpoint&fit=crop&fp-x=0.5&fp-y=0.5&h=956&q=80&w=956&s=f5e883d9e767bbccf734b1c604be707b) ![](/static/img/team-card-bg/square_team_listing_1.svg) ](https://www.kelleydrye.com/people/steven-yovits) ### [Steven Yovits](https://www.kelleydrye.com/people/steven-yovits) Partner [ ![](https://d3iuizmsm2hayf.cloudfront.net/content/uploads/Bio-Photos-1200x1200/Katz_Clifford.webp?auto=compress%2Cformat&crop=focalpoint&fit=crop&fp-x=0.5&fp-y=0.5&h=956&q=80&w=956&s=f13b7580066d7414df0594290ff2e188) ![](/static/img/team-card-bg/square_team_listing_2.svg) ](https://www.kelleydrye.com/people/clifford-katz) ### [Clifford Katz](https://www.kelleydrye.com/people/clifford-katz) Partner [ ![](https://d3iuizmsm2hayf.cloudfront.net/content/uploads/Bio-Photos-1200x1200/Zinna_Michael.webp?auto=compress%2Cformat&crop=focalpoint&fit=crop&fp-x=0.5&fp-y=0.5&h=956&q=80&w=956&s=801dddd3b01191f4f5e74e6a59410e11) ![](/static/img/team-card-bg/square_team_listing_3.svg) ](https://www.kelleydrye.com/people/michael-j-zinna) ### [Michael J. Zinna](https://www.kelleydrye.com/people/michael-j-zinna) Partner [ ![](https://d3iuizmsm2hayf.cloudfront.net/content/uploads/Bio-Photos-1200x1200/Bapna_Abhi_BW_Silloutte_1200x1200_Retouch_052924.webp?auto=compress%2Cformat&crop=focalpoint&fit=crop&fp-x=0.5&fp-y=0.5&h=956&q=80&w=956&s=38ce707c03db11622e28ee512d007295) ![](/static/img/team-card-bg/square_team_listing_4.svg) ](https://www.kelleydrye.com/people/abhi-bapna) ### [Abhi Bapna](https://www.kelleydrye.com/people/abhi-bapna) Special Counsel [ ![](https://d3iuizmsm2hayf.cloudfront.net/content/uploads/Bio-Photos-1200x1200/Ferraro_Vincent.webp?auto=compress%2Cformat&crop=focalpoint&fit=crop&fp-x=0.5&fp-y=0.5&h=956&q=80&w=956&s=fba1c324e1cb667fd2a9f9aa3242871b) ![](/static/img/team-card-bg/square_team_listing_5.svg) ](https://www.kelleydrye.com/people/vincent-m-ferraro) ### [Vincent M. Ferraro](https://www.kelleydrye.com/people/vincent-m-ferraro) Special Counsel [ ![](https://d3iuizmsm2hayf.cloudfront.net/content/uploads/Bio-Photos-1200x1200/Greenhut_Jason.webp?auto=compress%2Cformat&crop=focalpoint&fit=crop&fp-x=0.5&fp-y=0.5&h=956&q=80&w=956&s=7b9158a651fee732c67c2321829cb7ca) ![](/static/img/team-card-bg/square_team_listing_6.svg) ](https://www.kelleydrye.com/people/jason-p-greenhut) ### [Jason P. Greenhut](https://www.kelleydrye.com/people/jason-p-greenhut) Special Counsel [ ![](https://d3iuizmsm2hayf.cloudfront.net/content/uploads/Bio-Photos-1200x1200/Lewis_Douglas.webp?auto=compress%2Cformat&crop=focalpoint&fit=crop&fp-x=0.5&fp-y=0.5&h=956&q=80&w=956&s=cf671cd01fa7d1e934506187d28a2efb) ![](/static/img/team-card-bg/square_team_listing_7.svg) ](https://www.kelleydrye.com/people/douglas-lewis) ### [Douglas Lewis](https://www.kelleydrye.com/people/douglas-lewis) Special Counsel [ ![](https://d3iuizmsm2hayf.cloudfront.net/content/uploads/Bio-Photos-1200x1200/McDonough_Ted.webp?auto=compress%2Cformat&crop=focalpoint&fit=crop&fp-x=0.5&fp-y=0.5&h=956&q=80&w=956&s=370ae1473e08bbed2370b79b5f87ee2e) ![](/static/img/team-card-bg/square_team_listing_8.svg) ](https://www.kelleydrye.com/people/theodore-y-mcdonough) ### [Theodore Y. McDonough](https://www.kelleydrye.com/people/theodore-y-mcdonough) Special Counsel [ ![](https://d3iuizmsm2hayf.cloudfront.net/content/uploads/Bio-Photos-1200x1200/Wood_Andrew.webp?auto=compress%2Cformat&crop=focalpoint&fit=crop&fp-x=0.5&fp-y=0.5&h=956&q=80&w=956&s=e17dafb38a1e32031ad1460dbde1fe5e) ![](/static/img/team-card-bg/square_team_listing_9.svg) ](https://www.kelleydrye.com/people/andrew-wood) ### [Andrew Wood](https://www.kelleydrye.com/people/andrew-wood) Special Counsel [ ![](https://d3iuizmsm2hayf.cloudfront.net/content/uploads/Oliver_Kevin.webp?auto=compress%2Cformat&crop=focalpoint&fit=crop&fp-x=0.5&fp-y=0.5&h=956&q=80&w=956&s=56a2a930d410a97fb61b94565437c167) ![](/static/img/team-card-bg/square_team_listing_10.svg) ](https://www.kelleydrye.com/people/kevin-oliver) ### [Kevin Oliver](https://www.kelleydrye.com/people/kevin-oliver) Senior Associate Honors [ ![](https://d3iuizmsm2hayf.cloudfront.net/content/uploads/Listing-Images/star_award.webp?auto=compress%2Cformat&crop=focalpoint&fit=crop&fp-x=0.5&fp-y=0.5&h=750&q=80&w=1125&s=689e013005bf95956401d931cf38a235) ![](https://d3iuizmsm2hayf.cloudfront.net/content/uploads/Listing-rectangles/Honors_Listing.svg) ](https://www.kelleydrye.com/news/the-best-lawyers-in-america-recognizes-64-kelley-drye-attorneys-in-2026-edition-3) August 21, 2025 [ ](https://www.kelleydrye.com/news/the-best-lawyers-in-america-recognizes-64-kelley-drye-attorneys-in-2026-edition-3) Honors [ ![](https://d3iuizmsm2hayf.cloudfront.net/content/uploads/Listing-Images/award_with_wreath_blue02.webp?auto=compress%2Cformat&crop=focalpoint&fit=crop&fp-x=0.5&fp-y=0.5&h=750&q=80&w=1125&s=e66be7558f093987a403703c0a58a1e8) ![](https://d3iuizmsm2hayf.cloudfront.net/content/uploads/Listing-rectangles/Honors_Listing.svg) ](https://www.kelleydrye.com/news/chambers-and-partners-recognizes-kelley-drye-attorneys-and-practices-in-2025-chambers-usa-rankings) June 5, 2025 [ ](https://www.kelleydrye.com/news/chambers-and-partners-recognizes-kelley-drye-attorneys-and-practices-in-2025-chambers-usa-rankings) Honors [ ![](https://d3iuizmsm2hayf.cloudfront.net/content/uploads/Listing-rectangles/Honors_Listing.svg) ](https://www.kelleydrye.com/news/best-lawyers-woodward-white-inc-honors-kelley-drye-with-national-rankings-in-2025-report-of-best-law-firms) November 7, 2024 [ ](https://www.kelleydrye.com/news/best-lawyers-woodward-white-inc-honors-kelley-drye-with-national-rankings-in-2025-report-of-best-law-firms) In the News [ ![](https://d3iuizmsm2hayf.cloudfront.net/content/uploads/Listing-rectangles/In_the_News_Listing.svg) ](https://www.kelleydrye.com/news/the-best-lawyers-in-america-recognizes-56-kelley-drye-attorneys-in-2025-edition) August 15, 2024 [ ](https://www.kelleydrye.com/news/the-best-lawyers-in-america-recognizes-56-kelley-drye-attorneys-in-2025-edition) [ View all for this practice ](https://www.kelleydrye.com/news?practice=Patent+Litigation+and+Post-Grant+Proceedings&newsType=Honors#listing) - Past Speaking Engagement [ ![](https://d3iuizmsm2hayf.cloudfront.net/content/uploads/Listing-rectangles/Speaking_Engagement_Listing.svg) ](https://www.kelleydrye.com/events/ip-law-101) [ ](https://www.kelleydrye.com/events/ip-law-101) September 12, 2024 7:00pm - 8:00pm | Chicago, IL - Share this entry - - - - - [ View entry pdf ](https://s3.amazonaws.com/cdn.kelleydrye.com/content/uploads/pdf-snapshots/patent-litigation-and-post-grant-proceedings-20231128091455.pdf) ### Contact Information - [Steven Yovits](https://www.kelleydrye.com/people/steven-yovits) Partner (312) 857-7099 email hidden; JavaScript is required ### Related Services - [Intellectual Property](https://www.kelleydrye.com/practices/intellectual-property) - [Trademark and Copyright Litigation](https://www.kelleydrye.com/practices/trademark-and-copyright-litigation) - [Patent Prosecution](https://www.kelleydrye.com/practices/patent-prosecution) - [Trademark and Copyright Prosecution](https://www.kelleydrye.com/practices/trademark-and-copyright-prosecution) [View all related viewpoints](https://www.kelleydrye.com/viewpoints?practice=Patent+Litigation+and+Post-Grant+Proceedings#listing)