Plexxikon Inc. v. Novartis Pharmaceuticals Corporation

District Court, N.D. California·Decided February 23, 2021·No. 4:17-cv-04405·Unknown

Opinion

PLEXXIKON INC., Case No. 4:17-cv-04405-HSG

Plaintiff, ORDER GRANTING PLEXXIKON vs. INC.’S MOTION FOR SUMMARY JUDGMENT OF NO ANTICIPATION Re: Dkt. No. 167 CORPORATION, Defendant.

Pending before the Court is Plaintiff Plexxikon Inc.’s motion for summary judgment that the asserted claims of U.S. Patent Nos. 9,469,640 (the “’640 Patent”) and 9,844,539 (the “’539 Patent”) are not anticipated under 35 U.S.C. § 102 by U.S. Patent No. 4,595,780 (“Shionogi”) and PCT Patent Publication No. WO 06/124874 (the “Kalypsys Application”). Dkt. No. 167. The Court heard argument on the motion, Dkt. No. 341, and GRANTS it for the reasons detailed below. Plexxikon Inc. (“Plexxikon”) accuses Defendant Novartis Pharmaceutical Corporation (“Novartis”) of infringing claims 1, 2, 4-6, 9, and 11-12 of the ’640 Patent and claims 1, 2, 4-9, 11-12, and 14-19 of the ’539 Patent. Novartis responds, inter alia, that some or all of these claims are invalid as anticipated by Shionogi and the Kalypsys Application.1 The parties do not dispute that Shionogi, which issued on June 17, 1986, and the Kalypsys application, which was filed on May 11, 2006, predate the applications of the asserted patents by more than one year, making them prior art under 35 U.S.C. § 102(b) (pre-AIA). 1 A. The Asserted Claims 2 The °640 and °539 Patents both claim a class of compounds defined by the following 3 molecular structure: 4

5 oO 0

ee 7 If N R? 3 F 10 As shown above,’ the claimed structure has variable and constant components. The 1] constant components, marked by O, S, N, and F, represent the elements oxygen, sulfur, nitrogen, (12 || and fluorine. In addition, the hexagon in the middle represents a phenyl ring, and the lines joined

13 without an element represent carbons. The remaining elements of R!, R’, R’, R4, L!, Ar, and m

14 are variables. See generally Dkt. Nos. 167-5, 167-6.

15 The parties agree that the claims require both elements and particular positions for those © 16 || elements. For example, the fluorine must be in the “inner” or “2” position along the pheny] ring,

17 between the nitrogen and the linker L1. Absent such positioning, the parties’ experts agree that a Z 18 compound fails to satisfy the claims. See Dkt. No. 393-11 (“Baran Decl.”) 72, 93; 393-12 19 (“Metzker Report”) § 133. 20 Claim 1 of the ’640 Patent, which the parties agree to treat as representative,” lists the 21 following options for the claimed variables: 22 e Liisa bond or —N(H)C(O)—; 23 e each R1 is optionally substituted lower alkyl or optionally substituted heteroaryl; e R2Iis hydrogen or halogen; 24 e Rais hydrogen; e R3is optionally substituted lower alkyl or optionally substituted aryl; 25 e mis0O, 1, 2, 3,4, or 5; and %6 e Arisa monocyclic heteroaryl containing 5 to 6 atoms where at least one atom is nitrogen. 27 2 See Dkt. No. 167-3 (640 Patent) at claim 1; Dkt. No. 157-4 (539 Patent) at claim 1. 28 3 See Dkt. No. 167 (“MSJ”) at 2 n.3; Dkt. No. 186 (“Opp.”) at 4:25-27.

] B. Shionogi 2 Like the asserted patents, Shionogi claims a broad class of compounds defined by a 3 molecular formula.’ See Dkt. No. 167-23 (Shionogi) at claim 1. Formula (I) has the following 4 structure: 5 R3 6 er.

R'SO2N" l. “ “CO—N R> 10 > 11 at 1:25-36. ae 2 As in the asserted patents, the “R” groups are variables. For example, the R? element may

13 be “hydrogen, halogen, a Ci-Cs alkyl, or Ci-Cs alkoxy group.” /d. at 1:37-45. The specification

14 || states that the halogen can be a fluorine. /d. at 2:28. By using a line going through the middle of 15 || the phenyl ring side, Shionogi indicates that R? may be located anywhere on the phenyl ring. See A 16 Baran Decl. § 94.

17 Novartis’ expert, Dr. Phil Baran, does not expressly opine that Shionogi’s Formula (1) Zz 18 anticipates the asserted claims. Instead, Dr. Baran focuses on the examples provided in the 19 specification. Among the 80 examples of specific compounds of Formula (1) in Shionogi, Dr. 20 Baran focuses on Example 61, which corresponds to the following molecular structure: Ls 22 O.,.0 | H ‘Ss. a we N 3 ie ~N i te ye" 25 26 , * Shionogi is directed to a different problem than the asserted patents—“sulfonamide benzamides” 27 with “anti-viral” and “anti-coccidial activities,” rather than B-Raf inhibitors—a fact that is largely 28 irrelevant to the anticipation analysis. See State Contracting & Eng’g Corp. v. Condotte Am., Inc., 346 F.3d 1057, 1068 (Fed. Cir. 2003).

] Shionogi at col. 19; Baran Decl. § 92; Dkt. No. 397-3 (“Baran Report”) § 417.° 2 Dr. Baran opines that Example 61 meets every limitation of claim 1 with one exception: it 3 does not include a fluorine in the “inner” position of the phenyl ring. Baran Decl. § 93. However, 4 Dr. Baran opines that because Example 61 is a species of Formula (I), and Formula (I) permits a 5 fluorine R> group anywhere along the phenyl ring, a person of ordinary skill in the art would 6 “immediately see” Example 61 with the required fluorine. Jd. 9] 94-95. 7 C. Kalypsys Application 8 The Kalypsys Application, which was considered during prosecution of the °539 Patent, 9 covers multiple formulas and hundreds of compounds. As relevant to this motion, the Kalypsys 10 Application sought to patent as claim 6 a compound having the formula shown below: 1] 12 ae eS

14 we R x" Py] 16

17 Dkt. No. 167-24 (Kalypsys Application) at 100. Zz 18 Each of the elements in the above formula is a variable. See id. The variables appear to be 19 nested, such that each X is selected from a group that includes an R, which itself may be one of a 20 dozen elements. Jd. As the result, the parties agree that claim 6 covers “trillions” of potential 21 compounds. See Dkt. No. 397-1 (“Baran Depo.”) at 172:13-17. 22 As with Shionogi, Dr. Baran does not expressly opine that the formula of claim 6 23 anticipates the asserted claims. Instead, Dr. Baran focuses on Compound 132, which has the 24 structure shown below. Even so, Dr. Baran expressly opines that Compound 132 “does not fall 25 within the scope of the Asserted Claims.” Baran Decl. § 72. Specifically, Dr. Baran identifies 26 27 s The compound shown above appears to be a reconstruction of the molecule based on the table 28 listing each variable selection in Shionogi. Notably, Shionogi appears to list hydrogen—not fluorine—for the R* variable. See Shionogi at cols. 19, 17.

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Plexxikon Inc. v. Novartis Pharmaceuticals Corporation, (N.D. Cal. 2021).

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