Hatch-Waxman Litigation

Recent News:

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

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.


The Hatch-Waxman Amendments to the Food, Drug & Cosmetic Act, which were passed in 1984, essentially created the current generic drug industry by allowing sponsors to demonstrate bioequivalence without having to conduct costly and time-consuming clinical trials. With that market-entry barrier removed, real competition developed in what was previously a monopolistic marketplace. Generic drugs now account for about 90 percent of the total prescriptions dispensed in the United States but only about 23 percent of all dollars spent on prescription medications, saving American consumers almost two trillion dollars over the last decade.

Hatch-Waxman meaningfully incentivized generic drug companies’ ability to provide life-saving, cost-effective medications by granting 180-days of market exclusivity to the first applicant with a so-called Paragraph IV certification in an Abbreviated New Drug Application (ANDA). Innovator companies were equally incentivized to participate by being granted an automatic 30-month stay of approval of the ANDA upon filing a patent infringement suit against the ANDA applicant within statutory time limits. The United States is one of the only countries in the world to link regulatory approval of generic pharmaceutical products to its patent system.

The Hatch-Waxman patent certification and regulatory approval process is rife with complexity and nuance. Cozen O’Connor’s experienced attorneys have been lead litigation counsel for generic clients in scores of Paragraph IV litigations, and we have counseled clients on scores more. The vast majority of our cases have been litigated to a successful conclusion or settled favorably for our clients. After one negotiation, our adversary, the chief patent counsel for a well-known innovator company, said that our settlement agreement was so thorough, it addressed generic opportunities that the innovator had not even considered.

We closely track the fast-moving pharmaceutical marketplace to help industry participants identify and pursue market opportunities without delay. Two examples of changes that have significantly altered the competitive landscape for our clients are the Inter Partes Review procedure established by the America Invents Act of 2012 and the Food and Drug Administration’s Safety and Innovation Act of 2012. Cozen O’Connor advises clients on how these and other regulatory shifts alter decisions of how and when to pursue market entry.

In addition to regulatory change, pharmaceutical companies are also coming under increasing scrutiny by federal and state regulators charged with enforcing fraud, abuse and anti-corruption laws. The Cozen O'Connor Hatch-Waxman team works in close coordination with the firm’s recognized Internal Investigations & Criminal Defense group to respond to inquiries, investigations, and civil or criminal charges. We have experience handling enforcement actions by the Food & Drug Administration, Federal Trade Commission, Office of the Inspector General, Centers for Medicare & Medicaid Services, Department of Justice, Department of Health and Human Services, individual U.S. attorney’s offices, and state attorneys general.

The members of Cozen O’Connor’s Hatch-Waxman team are leaders in the intellectual property litigation bar. Our attorneys hold advanced degrees in the natural sciences and nearly all members have experience as research scientists in industry or academia, and we understand the intersection of law and science with respect to small molecules, biosimilars and hybrids. Our team includes former senior government attorneys, registered patent attorneys, and patent examiners for the U.S. Patent and Trademark Office.



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.

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.

Sham Litigation in a Hatch-Waxman Action [Intellectual Property Alert]

July 09, 2018

Marilyn Neiman and Martin B. Pavane discuss the largest award in a litigated FTC antitrust case and what it means for brand pharma and their Hatch-Waxman case filings.

Supreme Court: Reverse Payment Settlements Subject to Antitrust Scrutiny [Intellectual Property Alert]

June 25, 2013

On June 17, 2013, the U.S. Supreme Court handed down a decision that addressed a “reverse payment” settlement agreement between a brand-name pharmaceutical company and multiple generic drug companies. The Supreme Court held that a settlement agreement in which a patentee pays an accused infringer not to enter the market – even if the agreement allows market entry before the patent term expires – is not presumptively lawful and is still subject to antitrust scrutiny.

Supreme Court Revisits Pre-emption Pertaining to Pharmaceuticals [The Legal Intelligencer]

June 13, 2013

The U.S. Supreme Court is presently considering whether federal law pre-empts state design-defect claims targeting generic pharmaceutical products. Just two years ago, the court insulated generic-drug manufacturers from state-law failure-to-warn claims. It seems doubtful that any of the justices in that majority will treat this case differently, and, thus, generic drugmakers may soon enjoy a new immunity.

Events & Seminars

Past Events

8th Annual Pharma IPR Conference

March 06, 2019 - Mumbai, Maharashtra

8th Annual Summit on Biosimilars

June 12, 2017 - New York, NY

6th Annual Summit on Biosimilars

June 01, 2015 - New York, NY

9th Annual Paragraph IV Disputes Conference

April 27, 2015 - New York, NY

In The News

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

Chair, Hatch-Waxman & Biologics Litigation


(202) 912-4837

Barry P. Golob

Co-Chair, Intellectual Property Litigation


(202) 912-4815


Related Practice Areas

Keep up-to-date with the latest news from Cozen O'Connor

Enter your City or Zip.

Probably shouldn't change this:
Sign up to receive alerts, publications, and event / webinar invites.

By submitting your contact information, you are giving Cozen O'Connor consent to contact you via email.