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Nana Liu


[email protected]



Nana focuses her practice on intellectual property litigation, including matters at the International Trade Commission and Hatch-Waxman pharmaceutical cases. She also assists with litigation in federal district courts and appellate litigation at the US Court of Appeals for the Federal Circuit. She primarily represents companies in the life sciences industry.

Prior to joining Mintz, Nana served as a judicial law clerk to the now-retired Hon. Andrew R. Grainger of the Massachusetts Appeals Court.

While earning her law degree, Nana was a law clerk at a Massachusetts-based business law firm and a summer law clerk at a Boston-based litigation firm. She also served as a judicial intern to the Hon. Norman H. Stahl, a Senior Judge of the US Court of Appeals for the First Circuit, and was a legal intern with Greater Boston Legal Services’ Asian Outreach Unit. In law school, Nana was a senior staff editor of the Northeastern University Law Journal and a teaching assistant at the school’s intellectual property clinic and for two first-year courses: criminal justice and constitutional law.

Prior to law school, Nana was a bacterial immunology associate at the Cambridge, Massachusetts location of a global company that specializes in the development of new vaccines.


  • Northeastern University (JD)
  • Wellesley College (BA, Biological Chemistry)


  • Volunteer, Civil Appeals Clinic, Volunteer Lawyers Project of the Boston Bar Association
  • Volunteer, New England Legal Foundation
  • Mentor, Minds Matter Boston


- Mandarin


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In Hatch-Waxman litigation, Federal Circuit restricts venue under the TC Heartland to districts relating to ANDA filings

November 12, 2020 | Blog | By Adam Samansky, Peter Cuomo, Joe Rutkowski, Nana Liu

On November 5, 2020, the United States Court of Appeals for the Federal Circuit, in Valeant Pharmaceuticals N. Am. LLC v. Mylan Pharmaceuticals Inc., No. 19-2402, resolved a split among district courts over what constitutes “acts of infringement” sufficient to support venue in the context of a Hatch-Waxman litigation.  
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Federal Circuit Upholds Application of Dedication-Disclosure Doctrine at the Pleading Stage

May 15, 2020 | Blog | By Thomas Wintner, Adam Samansky, Nana Liu

On May 8, 2020, the Court of Appeals for the Federal Circuit affirmed the District of Delaware’s application of the disclosure-dedication doctrine in granting a motion for judgment on the pleadings in Eagle Pharmaceuticals Inc. v. Slayback Pharma LLC, No. 19-1924. 
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PTAB Reinforces Uneven Evidentiary Playing Field in IPRs

April 16, 2020 | Blog | By Daniel Weinger, Nana Liu

The U.S. Patent and Trademark Office’s Patent Trial and Appeal Board (PTAB) recently grappled with the admission into evidence of expert deposition testimony that was presumably harmful to the petitioner in an inter partes review (IPR), and barred the testimony from coming into evidence. 
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Mintz is recognized as among the top ten firms in ITC Section 337 litigation by Patexia in its inaugural "ITC Intelligence Report". We are pleased to be among the firms included in this publication and thrilled that it has come on the heels of a great year at the ITC for the Mintz team.
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Federal Circuit affirms Safe Harbor ruling and $70 million award in Amgen Inc. v. Hospira, Inc.

December 20, 2019 | Blog | By Thomas Wintner, Peter Cuomo, Nana Liu

On December 16, 2019, the Court of Appeals for the Federal Circuit issued an opinion that fully upheld the District of Delaware’s denial of Hospira, Inc.’s motion for judgment as a matter of law (JMOL), or alternative motion for new trial, in Amgen Inc. v. Hospira, Inc., Nos. 2019-1067, 2019-1102.  
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On December 5, 2019, Judge David C. Godbey of the Northern District of Texas denied the defendant Diebold Nixdorf, Inc.’s (“Diebold”) motion to dismiss under Rule 12(b)(6), in Nautilus Hyosung Inc. v. Diebold, Inc. et al., 3-16-cv-00364 (N.D. Tex.).  Diebold filed the motion after the Federal Circuit reversed the International Trade Commission’s (“ITC”) finding of infringement in a parallel Section 337 investigation.  Instead, the Federal Circuit held that the one patent in the suit was invalid due to indefiniteness. 
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On December 10, 2019, an agreement was reached between the United States, Mexico, and Canada on amendments to the U.S.-Mexico-Canada Agreement (“USMCA”).  The USMCA, if ratified by each respective country, would replace the North American Free Trade Agreement (“NAFTA”), which has been in effect since January 1, 1994. 
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In a recent decision clarifying the legal standards of the International Trade Commission’s domestic industry requirement, the Commission has upheld, with modified reasoning, Chief Administrative Law Judge Bullock’s initial determination (“ID”), finding no domestic industry in Certain Carburetors and Products Containing Such Carburetors, Inv. No. 337-TA-1123, Comm’n Op. (Oct. 28, 2019). 
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Collateral estoppel does not attach to PTAB invalidity determination pending appeal

October 10, 2019 | Blog | By Adam Samansky, Peter Cuomo, Nana Liu

Recently, in Sanofi-Aventis v. Mylan, 2:17-cv-09105-SRC-CLW, Judge Stanley Chesler of the United States District Court, District of New Jersey, denied a motion by defendant Mylan for summary judgment of invalidity of asserted patent claims that were found to be obvious by the Patent Trial and Appeal Board (“PTAB”).
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ITC suggests 5% Threshold for Domestic Industry Assessment; order may impact tech companies

September 23, 2019 | Blog | By Michael Renaud, Andrew DeVoogd, Matthew Karambelas, Nana Liu

Recently, Chief Administrative Law Judge (“CALJ”) Bullock of the U.S. International Trade Commission (“ITC”), in Certain Carburetors and Products Containing Such Carburetors, Inv. No. 337-TA-1123, Order No. 77, suggested that “significant” or “substantial” domestic industry investments must amount to greater than 5% of domestic industry product sales in the United States. 
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