Hatch-Waxman & Biologics

Cozen O’Connor's nationally recognized Hatch-Waxman and Biologics/Biosimilars practice provides strategic counsel to companies seeking to enter the U.S. small molecule and biologics/biosimilars markets.

Our dedicated team includes licensed patent attorneys with advanced degrees in organic chemistry, molecular cell biology, immunology, and biophysics; former research scientists in industry and academia; and intellectual property litigators with decades of first-chair trial experience.

The Hatch-Waxman Amendments to the Food, Drug & Cosmetic Act in 1984 created a new marketplace for generic pharmaceuticals by lowering barriers to FDA approval and establishing a period of exclusivity through the Abbreviated New Drug Application (ANDA) process. Cozen O’Connor has high-level experience representing both branded and generic drug companies from the earliest stages of drug development through regulatory review, and, in some cases, litigation. Our team has successfully partnered with clients on more than 60 drug products, including for Apotex Inc.; ApoPharma, Inc.; Amneal Pharmaceuticals, Inc; Sandoz Inc.; Mylan; Kyowa Kirin, Inc.; and Endo Pharmaceuticals Inc.

The firm also has a cutting-edge Biologics Price Competition and Innovation Act (BPCIA) practice. In September 2016, Cozen O’Connor attorneys won the first-ever patent trial under the BPCIA, which set the precedent that informs the “patent dance” and notice requirements under the BPCIA.  As the market for biologic/biosimilar products continues to grow, so will the need for legal counsel with a sophisticated understanding of the unique legal questions arising from the development, approval, sales, and marketing of biologic/biosimilar drugs.

Cozen O’Connor’s Hatch-Waxman and Biologics attorneys continue to distinguish themselves by providing comprehensive legal services. Our attorneys work closely with clients to monitor competitors, clear obstacles to the development and launch of new products, advise on the regulatory review process, and negotiate and draft settlement agreements between market competitors. When settlement is not possible or not advisable, Cozen O’Connor is fully prepared to go to trial — and win.


  • Competitive intelligence concerning patent strategy, patentability, and freedom-to-operate
  • Assist with regulatory submissions, responses, and approvals
  • Advise on regulatory requirements concerning patent listing, exclusivity, and forfeiture
  • Guide strategic decisions around validity and/or infringement challenges to competitors’ IP
  • Counsel on market entry and expansion
  • Respond to government investigations
  • Lead counsel for litigation and settlement negotiations under Hatch-Waxman and the BPCIA 
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Biotechnology at the Supreme Court—Will the U.S. Government Back Amgen’s Petition? [IPWatchdog]

May 04, 2022

Blake Coblentz and Aaron Lukas co-authored an article following up on a previous discussion about two issues that they will be watching closely this year relating to litigation involving small and large molecule therapies.

Two Pharma and Biotech Cases to Watch in 2022 [IPWatchdog]

February 02, 2022

Blake Coblentz and Aaron Lukas co-authored an article about two issues that they will be watching closely this year relating to litigation involving small and large molecule therapies.

Hatch-Waxman and BPCIA Cases and Trends to Watch in 2021 [IPWatchdog]

January 25, 2021

Blake Coblentz and Aaron Lukas co-authored an article about two major cases in 2021 that could have long-lasting effects on where and how Hatch-Waxman and Biologics Price Competition and Innovation Act (BPCIA) cases are litigated.

The PTAB Puts Hatch-Waxman Defendants on Notice: File IPRs Early or Risk Fintiv Discretionary Denial [IPWatchdog]

October 29, 2020

Blake Coblentz, Aaron Lukas, and Keri Schaubert wrote about the Patent Trial and Appeal Board (PTAB) denying the institution of Mylan Labs Ltd.’s petition for IPR of U.S. Patent No. 9,439,906 (“the ’906 patent”) in IPR2020-00440.

Maybe Biosimilar Applicants Should Dance After All [Biosimilar Development]

June 30, 2020

Blake Coblentz and Aaron Lukas wrote an article about the Biologics Price Competition and Innovation Act and the issues applicants face whether to go through the patent dance.

First Circuit Permits Antitrust Claims for Improperly Listing a Device Patent on the FDA’s Orange Book to Move Forward [Alert]

February 25, 2020

In a holding that could significantly broaden the antitrust inquiry in the context of the Hatch-Waxman regulatory scheme, on February 13, 2020, the U.S. Court of Appeals for the First Circuit issued an opinion that may have wide-ranging implications for both branded companies that own, and generic companies that challenge, patents listed on FDA’s Orange Book that claim drug delivery devices.

Breathing New Life Into The “Tangential” Exception to Prosecution History Estoppel [Alert]

August 26, 2019

Martin B. Pavane and Darren S. Mogil discuss the importance of carefully analyzing the prosecutorial history of a patent to determine the reason for the narrowing amendment. If the reason was only tangential to the equivalent at issue, estoppel will not apply.

In The News

Fed. Circ. Won't Revive Vanda's Sleep Disorder Patent Claims

May 10, 2023

Cozen O'Connor successfully represented Apotex in a patent dispute with Vanda Pharmaceuticals over the sleep disorder drug Hetlioz.

Fed. Circ. Won't Bar Generic Sleep Meds Amid Vanda Appeal

January 03, 2023

Cozen O'Connor successfully represented Apotex at the U.S. Court of Appeals for the Federal Circuit in securing a denial of Vanda Pharmaceuticals' bid to seek an injunction pending an appeal of Apotex's and Teva's victory in the District of Delaware.

Teva, Apotex Win Ax Of Patents In Sleep Drug Suit

December 13, 2022

Cozen O’Connor scored a major win for Apotex Inc. and Apotex Corp. in federal court in Delaware.

Even With Pandemic, Patent Suit Filings Held Steady In 2021

May 18, 2022

Blake Coblentz was quoted in Law 360 discussing the impact the COVID-19 pandemic has had on patent filings.

Q&A: Shouvik Biswas, Aaron Lukas and Blake Coblentz on the America Invents Act

September 16, 2021

Blake Coblentz and Aaron Lukas spoke with World Intellectual Property Review to discuss the 10-year anniversary of the America Invents Act (AIA).

How the rise of PTAB discretionary denials impacts Hatch-Waxman strategies

February 11, 2021

Blake Coblentz was quoted in IAM discussing how the recent denial of a Mylan IPR petition suggests that some pharma patents may be insulated from controversial administrative challenges, with serious implications for generic litigation strategies.

Virus Delays, Few Approvals Dry Up Generic Drug Lawsuits in 2020

September 09, 2020

Keri Schaubert was quoted in Bloomberg Law discussing drug patent lawsuits that took a 21% dive from this time last year, a “perfect storm” that traces back to 2016 when the FDA only approved a handful of new drugs.

Rush for Generic Go-Ahead on Novel Drugs Roils Pharma Industry

June 19, 2020

Blake Coblentz was quoted in Bloomberg Law discussing how generic drugmakers are increasingly lining up to bring competing versions of brand-name products to the market at the earliest possible date.

Lawyering Through Covid-19: What We’ve Heard From the Practices

May 28, 2020

Blake Coblentz was quoted in Bloomberg Law about how the COVID-19 pandemic is impacting a cross-section of practice groups and industries.


W. Blake Coblentz

Co-Chair, Hatch-Waxman & Biologics Litigation
Vice Chair, Intellectual Property


(202) 912-4837

Aaron Lukas, Ph.D.

Co-Chair, Hatch-Waxman & Biologics Litigation


(202) 912-4823

Barry P. Golob

Co-Chair, Intellectual Property Litigation


(202) 912-4815


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