Modernatx, Inc. v. Arbutus Biopharma Corporation

CourtCourt of Appeals for the Federal Circuit
DecidedDecember 1, 2021
Docket20-1184
StatusPublished

This text of Modernatx, Inc. v. Arbutus Biopharma Corporation (Modernatx, Inc. v. Arbutus Biopharma Corporation) is published on Counsel Stack Legal Research, covering Court of Appeals for the Federal Circuit primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Modernatx, Inc. v. Arbutus Biopharma Corporation, (Fed. Cir. 2021).

Opinion

Case: 20-1184 Document: 135 Page: 1 Filed: 12/01/2021

United States Court of Appeals for the Federal Circuit ______________________

MODERNATX, INC., FKA MODERNA THERAPEUTICS, INC., Appellant

v.

ARBUTUS BIOPHARMA CORPORATION, FKA PROTIVA BIOTHERAPEUTICS, INC., Cross-Appellant

ANDREW HIRSHFELD, PERFORMING THE FUNCTIONS AND DUTIES OF THE UNDER SECRETARY OF COMMERCE FOR INTELLECTUAL PROPERTY AND DIRECTOR OF THE UNITED STATES PATENT AND TRADEMARK OFFICE, Intervenor ______________________

2020-1184, 2020-1186 ______________________

Appeals from the United States Patent and Trademark Office, Patent Trial and Appeal Board in No. IPR2018- 00739. ______________________

Decided: December 1, 2021 ______________________

AMY K. WIGMORE, Wilmer Cutler Pickering Hale and Dorr LLP, Washington, DC, argued for appellant. Also Case: 20-1184 Document: 135 Page: 2 Filed: 12/01/2021

represented by MARK CHRISTOPHER FLEMING, EMILY R. WHELAN, Boston, MA.

DAVID I. BERL, Williams & Connolly LLP, Washington, DC, argued for cross-appellant. Also represented by THOMAS S. FLETCHER, JESSICA PALMER RYEN; SONJA ROCHELLE GERRARD, STEVEN WILLIAM PARMELEE, MICHAEL T. ROSATO, Wilson Sonsini Goodrich & Rosati, Seattle, WA; LORA MARIE GREEN, RICHARD TORCZON, Washington, DC.

ROBERT MCBRIDE, Office of the Solicitor, United States Patent and Trademark Office, Alexandria, VA, for interve- nor. Also represented by THOMAS W. KRAUSE, FARHEENA YASMEEN RASHEED. ______________________

Before LOURIE, O’MALLEY, and STOLL, Circuit Judges. LOURIE, Circuit Judge. ModernaTx, Inc. (“Moderna”) appeals from the decision of the U.S. Patent and Trademark Office Patent Trial and Appeal Board (“Board”) holding that claims 7–8, 10–11, 13, and 16–20 of U.S. Patent 9,364,435 are not unpatentable as obvious. See Moderna Therapeutics, Inc. v. Protiva Bio- therapeutics, Inc., IPR2018-00739, 2019 Pat. App. LEXIS 13612 (Sept. 11, 2019) (“Board Decision”). Arbutus Bio- pharma Corporation (“Arbutus”) 1 cross-appeals from the Board’s decision holding that claims 1–6, 9, 12, and 14–15

1 At the time that this appeal was filed in November 2019, the cross-appellant was named Protiva Biotherapeu- tics, Inc. (“Protiva”). Subsequently, in June 2021, Protiva moved the court to revise the official caption to replace Pro- tiva with Arbutus. In this opinion, unless otherwise indi- cated, we use “Protiva” and “Arbutus” interchangeably based on the relevant context to refer to the cross-appellant in this appeal. Case: 20-1184 Document: 135 Page: 3 Filed: 12/01/2021

MODERNATX, INC. v. ARBUTUS BIOPHARMA CORPORATION 3

are unpatentable as anticipated. Id. For the reasons pro- vided below, we dismiss Moderna’s appeal for lack of stand- ing. Regarding Arbutus’s cross appeal, we affirm. BACKGROUND I. The ’435 Patent Arbutus owns the ’435 patent directed to “stable nu- cleic acid-lipid particles (SNALP) comprising a nucleic acid (such as one or more interfering RNA), methods of making the SNALP, and methods of delivering and/or administer- ing the SNALP.” ’435 patent at Abstract. The patent, which issued on June 14, 2016, claims priority from a pro- visional application filed on April 15, 2008. As described in the ’435 patent, RNA interference (“RNAi”) is a biological process in which recognition of dou- ble-stranded RNA “leads to posttranscriptional suppres- sion of gene expression.” Id. at col. 1 ll. 39–42. That biological process is mediated by small interfering RNA (“siRNA”), “which induces specific degradation of mRNA through complementary base pairing.” Id. at col. 1 ll. 42– 45. The ’435 patent recognized that RNAi provided “a po- tential new approach to downregulate or silence the tran- scription and translation of a gene of interest.” Id. at col. 1 ll. 52–54. A “safe and effective nucleic acid delivery system is re- quired for RNAi to be therapeutically useful.” Id. at col. 1 ll. 63–64. The delivery system “should be small” and “should remain intact in the circulation for an extended pe- riod of time in order to achieve delivery to affected tissues.” Id. at col. 2 ll. 38–42. This requires a “highly stable, serum- resistant nucleic acid-containing particle that does not in- teract with cells and other components of the vascular com- partment.” Id. at col. 2 ll. 42–45. The particle should also “readily interact with target cells at a disease site in order to facilitate intracellular delivery of a desired nucleic acid.” Id. at col. 2 ll. 45–47. The ’435 patent thus recognized that Case: 20-1184 Document: 135 Page: 4 Filed: 12/01/2021

there remained “a strong need in the art for novel and more efficient methods and compositions for introducing nucleic acids such as siRNA into cells.” Id. at col. 2 l. 66–col. 3 l. 1. The ’435 patent describes the invention as “novel, se- rum-stable lipid particles comprising one or more active agents or therapeutic agents, methods of making the lipid particles, and methods of delivering and/or administering the lipid particles (e.g., for the treatment of a disease or disorder).” Id. at col. 3 ll. 9–13. The lipid particles are com- prised of one or more cationic lipids, one or more non-cati- onic lipids, and one or more conjugated lipids. See id. at col. 3 ll. 22–31. As described in the patent, “[t]he present invention is based, in part, upon the surprising discovery that lipid particles comprising from about 50 mol % to about 85 mol % of a cationic lipid, from about 13 mol % to about 49.5 mol % of a non-cationic lipid, and from about 0.5 mol % to about 2 mol % of a lipid conjugate provide ad- vantages when used for the in vitro or in vivo delivery of an active agent, such as a therapeutic nucleic acid (e.g., an in- terfering RNA).” Id. at col. 5 ll. 55–62. The ’435 patent further states that the stable nucleic acid-lipid particles “advantageously impart increased activity of the encapsu- lated nucleic acid (e.g., an interfering RNA such as siRNA) and improved tolerability of the formulations in vivo, re- sulting in a significant increase in the therapeutic index” as compared to prior art nucleic acid-lipid particle compo- sitions. Id. at col. 5 l. 62–col. 6 l. 2. And the particles are “stable in circulation, e.g., resistant to degradation by nu- cleases in serum, and are substantially non-toxic” to hu- mans. Id. at col. 6 ll. 2–5 The ’435 patent contains 20 claims. Claim 1, the only independent claim, recites: 1. A nucleic acid-lipid particle comprising: (a) a nucleic acid; Case: 20-1184 Document: 135 Page: 5 Filed: 12/01/2021

MODERNATX, INC. v. ARBUTUS BIOPHARMA CORPORATION 5

(b) a cationic lipid comprising from 50 mol % to 85 mol % of the total lipid present in the particle; (c) a non-cationic lipid comprising from 13 mol % to 49.5 mol % of the total lipid present in the particle; and (d) a conjugated lipid that inhibits aggre- gation of particles comprising from 0.5 mol % to 2 mol % of the total lipid pre- sent in the particle. Id. at col. 89 ll. 55–63. Many of the dependent claims con- tain additional limitations directed to one of the various components in the nucleic acid-lipid particle of claim 1. For example, claims 2 and 3 are directed to the nucleic acid component, claim 4 is directed to the cationic lipid compo- nent, claims 5–8 are directed to the non-cationic lipid com- ponent, and claims 9–12 are directed to the conjugated lipid component. Id. at col. 89 l. 64–col. 91 l. 21. The re- maining dependent claims pertain to the encapsulation of the nucleic acid within the particle, id. at col. 91 ll. 22–24 (claim 13), pharmaceutical compositions comprising the particle, id. at col. 92 ll. 1–3 (claim 14), and methods for in- troducing a nucleic acid into a cell, in vivo delivery of a nu- cleic acid, and treatment using the particle, id. at col. 92 ll. 4–22 (claims 15–20). II.

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