Aventis Pharma Deutschland GmbH v. Cobalt Pharmaceuticals, Inc.

355 F. Supp. 2d 586, 2005 U.S. Dist. LEXIS 1736, 2005 WL 289835
CourtDistrict Court, D. Massachusetts
DecidedFebruary 7, 2005
DocketCIV.A.03-10492-JLT
StatusPublished
Cited by8 cases

This text of 355 F. Supp. 2d 586 (Aventis Pharma Deutschland GmbH v. Cobalt Pharmaceuticals, Inc.) is published on Counsel Stack Legal Research, covering District Court, D. Massachusetts primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Aventis Pharma Deutschland GmbH v. Cobalt Pharmaceuticals, Inc., 355 F. Supp. 2d 586, 2005 U.S. Dist. LEXIS 1736, 2005 WL 289835 (D. Mass. 2005).

Opinion

MEMORANDUM

TAURO, District Judge.

This is an action for patent infringement arising under the Drug Price Competition and Patent Term Restoration Act of 1984 (the “Hatch-Waxman Act”). 1 Plaintiff Aventis Pharma Deutschland GmbH (“Aventis”) owns two unexpired patents relating to the ACE inhibitor “ramipril,” a drug approved by the FDA to treat hypertension, heart failure, and to reduce the risk of heart attack, stroke, and death from cardiovascular causes. Plaintiff King Pharmaceuticals, Inc. (“King”) exclusively sells ramipril in the United States under the trade name “ALTACE.” Defendant Cobalt Pharmaceuticals, Inc. (“Cobalt”) is seeking FDA approval for the manufacture and sale of a generic version of ramipril. Cobalt contends that Aventis’s patents are either invalid or will not be infringed by the proposed generic drug.

Background

Aventis, a German corporation, is the owner of U.S. Patent No. 5,061,722 (“ ’722 *588 Patent”). The ’722 patent claims the an-giotensin converting enzyme inhibiting compound ramipril. 2 Ramipril belongs to a family of pharmaceuticals commonly called “ACE inhibitors.” Aventis also owns a method-of-use patent, U.S. Patent No. 5,403,856 (“’856 Patent”). The ’856 patent claims a method of using ramipril to treat cardiac insufficiency, post-myocardial infarction, i.e., treating heart failure after a heart attack. 3

The Food and Drug Administration (“FDA”) has approved the use of ramipril for three distinct purposes: (1) treating hypertension; (2) treating heart failure; and (3) reducing the risk of heart attack, stroke, and death from cardiovascular causes (“reducing risk”). 4 In addition, the FDA-approved dosage recommendations are different for each treatment. 5 It is undisputed that Aventis’s ’856 patent claims the approved method of treating heart failure, while the approved methods of treating hypertension and reducing risk remain in the public domain. 6

A. The Hatchr-Waxman Act

All pharmaceutical companies must obtain FDA approval before marketing a new drug. 7 The Hatch-Waxman Act permits generic drug companies to use patented pharmaceuticals to develop generic drugs and to seek FDA approval for their manufacture and sale. 8 Filing an Abbreviated New Drug Application (“ANDA”) is the initial step in seeking FDA approval for a generic drug. 9 In the ANDA, generic manufacturers must demonstrate that the proposed generic drug is the bioequi-valent of a drug previously approved by the FDA. 10 This allows generic drug companies to “ ‘piggyback’ on the safety-and-effectiveness information that the brand-name manufacturers submitted” to the FDA. 11

The ANDA must also address patents that cover the relevant drug. Generic manufacturers must search the FDA’s “Approved Drug Products with Therapeutic Equivalence Evaluations” (hereinafter the “Orange Book”) in which patent holders list patents relating to their FDA-approved drugs. 12 If the Orange Book *589 lists unexpired patents covering the drug, then the generic manufacturer must file a “paragraph IV certification” to the FDA indicating either that the patents .will not be infringed by the manufacture and sale of the generic drug or that the existing patents are invalid. 13 If a method-of-use patent is listed in the FDA’s Orange Book, and the patent does not claim a use of the drug for which the ANDA applicant' is seeking approval, then the ANDA may simply include a statement to that effect. 14 This is called a “section viii statement.” An ANDA containing a section viii statement need not include a paragraph IV certification regarding the method-of-use patent. 15

When a generic company files an ANDA containing a paragraph IV certification, however, the applicant must notify the patent holder. 16 The patent holder then has forty-five days to bring an infringement suit against the ANDA applicant under 35 U.S.C. § 271(e)(2). 17 Because the ordinary ANDA applicant has not yet infringed the patents in any meaningful sense, § 271(e)(2) deems the filing of an ANDA an artificial act of infringement “sufficient to create case or controversy jurisdiction to enable a court to promptly resolve any dispute concerning infringement and validity.” 18 If the patent holder brings suit, the Hatch-Waxman Act suspends FDA approval until the earliest of the following: judicial resolution, the patent has expired, or thirty months from the patent holder’s receipt of notice. 19

Under the Hatch-Waxman Act, the district court must determine whether the generic company’s paragraph TV certification is accurate. In other words, the district court must determine “whether the patent in question is ‘invalid or unll not he infringed by the manufacture, use, or sale of the drug for which the [ANDA] is submitted.’” 20 If the court finds that the patents are valid and will be infringed by the generic drug, “then the patent owner is entitled to an order that FDA approval of the ANDA containing the paragraph IV certification not be effective until the patent expires.” 21 The court’s inquiry is grounded in the ANDA and the accompanying materials submitted in support. 22

B. Cohalt’s ANDA

On November 22, 2002, Defendant Cobalt, a Canadian corporation, submitted an ANDA to the FDA seeking approval to engage in the commercial manufacture, use, and sale of generic ramipril capsules. 23 Cobalt included a paragraph IV certification with respect to the ’722 patent owned by Aventis. 24 Cobalt’s paragraph TV certification asserted that Aventis’s ’722 patent is “invalid, unenforceable or will not be infringed” by Cobalt’s generic ramipril *590 capsules. 25

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Bluebook (online)
355 F. Supp. 2d 586, 2005 U.S. Dist. LEXIS 1736, 2005 WL 289835, Counsel Stack Legal Research, https://law.counselstack.com/opinion/aventis-pharma-deutschland-gmbh-v-cobalt-pharmaceuticals-inc-mad-2005.