ASTRAZENECA LP v. Apotex, Inc.

623 F. Supp. 2d 579, 2009 U.S. Dist. LEXIS 41739, 2009 WL 1372633
CourtDistrict Court, D. New Jersey
DecidedMay 14, 2009
DocketCivil Action 09-1518 (RMB)
StatusPublished
Cited by8 cases

This text of 623 F. Supp. 2d 579 (ASTRAZENECA LP v. Apotex, Inc.) is published on Counsel Stack Legal Research, covering District Court, D. New Jersey primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
ASTRAZENECA LP v. Apotex, Inc., 623 F. Supp. 2d 579, 2009 U.S. Dist. LEXIS 41739, 2009 WL 1372633 (D.N.J. 2009).

Opinion

OPINION

BUMB, District Judge. 1

I. Introduction

Plaintiffs AstraZeneca LP and AstraZeneca AB (“AstraZeneca” or “Plaintiffs”) are pharmaceutical companies who develop new and innovative drugs and treatment methods. Defendants Apotex, Inc. and Apotex Corp. (“Apotex” or “Defendants”) are pharmaceutical companies who manufacture generic versions of brand name drugs. At issue in this case is AstraZeneca’s PULMICORT RESPULES, a once-daily inhaled corticosteroid used in the treatment of pediatric asthma. AstraZeneca holds two patents relating to PULMICORT RESPULES and seeks to enjoin Apotex from manufacturing and selling a generic version of this drug.

A. Asthma

Millions of Americans suffer from chronic respiratory diseases, such as asthma. Asthma alone affects approximately 22 million Americans. Asthma is particularly problematic for children. The Center for Disease Control estimates that 8.9% of all American children suffer from asthma.

Asthma is a chronic inflammatory disease of the airways. The symptoms of asthma include wheezing, breathlessness, coughing and chest tightness. These symptoms vary in severity from patient to patient and for individual patients. For example, the “fall asthma epidemic,” when some patients experience increased burden of symptoms and exacerbations in the fall season, is well known. Even patients with mild asthma may experience significant, and sometimes life-threatening, exacerbations.

B. Asthma Medications and Delivery Systems 2

Asthma medications are designed in different formulations for use with different methods of administration and delivery systems. Examples of different formulations used in long-term asthma control include solutions, suspensions, dry powders, tablets or capsules. The formulation of the medication and delivery system used are often dictated by the characteristics of the particular active ingredient.

Depending on how the medication is formulated, asthma medications may be administered in different ways, including by inhalation, orally (ingested), rectally and parenterally (injected). The most common delivery system for inhaled products is a pressurized metered dose inhaler (“pMDI”), which includes formulations such as suspensions or solutions. pMDIs are referred to colloquially as “puffers.” Another type of device for inhaled products is a dry-powder inhaler (“DPI”). DPIs typically are used by twisting the *584 cap of the device to make available one dose of the dry powder medication. A nebulizer device vaporizes liquid medication into a mist that is inhaled through a face-mask or mouthpiece. The medication may be in the form of a suspension or a solution. A nebulizer permits the patient to receive the proper dose simply by breathing in a normal fashion. The face-mask is secured over the nose and mouth.

Prior to the availability of PULMICORT RESPULES®, discussed below, long-term asthma controller medications had significant disadvantages. Many of these medications required frequent dosing, at least twice per day, and sometimes more frequently. This frequent dosing led to problems with patients being able to adhere to the prescribed drug regimen, resulting in ineffective asthma control. Also, frequent dosing often increased the cost to patients. In addition, many of these medications failed to provide adequate asthma control, even when used properly.

C. AstraZeneca Patents

This case involves AstraZeneca’s revolutionary invention of a once-daily inhaled corticosteroid under the trade name PULMICORT RESPULES®. AstraZeneca began selling PULMICORT RES-PULES® in September 2000. PULMI-CORT RESPULES® became the first and only 3 once-daily inhaled corticosteroid approved by the FDA for children under the age of four on the market. As discussed below, because children are an especially challenging patient population to diagnose and treat, PULMICORT RESPULES® was a long-desired treatment of pediatric asthma, and it has played a unique role in such treatment. PULMICORT RES-PULES® is given to children twelve months to eight years of age. PULMI-CORT RESPULES® is used with a compressed air-driven jet nebulizer, a more appropriate method of administration for young patients.

AstraZeneca holds two patents related to PULMICORT RESPULES®: U.S. Patent No. 6,598,603 (the “'603 Patent”) and U.S. Patent No. 6,899,099 (the “'099 Patent”). Both the '603 Patent and '099 Patent include two types of claims, “kits” and “methods” for administering the PULMICORT RESPULES® active ingredient, budesonide, a corticosteroid. Both types of claims are directed to administration of a budesonide composition or suspension using a nebulizer device in a continuing regimen at a frequency of not more than once per day. PULMICORT RES-PULES® is often referred to as “budesonide inhalation suspension” or “BIS.”

The label (approved by the Federal Drug Administration (“FDA”)) for PULMICORT RESPULES® includes in the DOSAGE AND ADMINISTRATION section a table that shows recommended starting doses and highest doses of budesonide based on prior asthma therapy. The highest recommended doses of BIS are 0.5 mg total daily dose, 1.0 mg total daily dose, and 10 mg total daily dose for bronchodilator, inhaled corticosteroid, or oral corticosteroid therapy, respectively. The BIS is supplied in single dose ampules of two strengths of BIS, .25 mg, .5 mg or 1.0 mg per 2ml. The label stipulates that the recommended starting dose may be administered as either the total daily dose once-daily or in divided doses twice daily.

*585 Previous Therapy_Recommended Starting Dose Highest Recommended Dose
Bronchodilators alone 0.5 mg total daily dose adminis- 0.5 mg total daily dose tered either once-daily or twice _daily in divided doses_
Inhaled Corticosteroids 0.5 mg total daily dose adminis- 1 mg total daily dose tered either once-daily or twice _daily in divided doses_
Oral Corticosteroids 1 mg total daily dose adminis- 1 mg total daily dose tered either as 0.5 mg twice _daily or 1 mg once-daily_

The patient instruction sheet accompanying the PULMICORT RESPULES® instructs the patient to empty the contents of the ampule into the nebulizer cup. (See, e.g., Declaration of Thomas O. Garvey, III, M.D., at Ex. 4.)

D. Apotex’s ANDA Application and FDA Approval

The generic drug approval process is governed by the Hateh-Waxman Act. Specifically, 21 U.S.C. § 355© established a procedure for the submission and review of Abbreviated New Drug Applications (“ANDA”). Pursuant to this procedure, an ANDA applicant is not required to submit evidence to establish the clinical safety and effectiveness of the drug product; rather, an ANDA relies on the FDA’s pri- or determination that the reference listed drug (RLD) is safe and effective. See generally

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Bluebook (online)
623 F. Supp. 2d 579, 2009 U.S. Dist. LEXIS 41739, 2009 WL 1372633, Counsel Stack Legal Research, https://law.counselstack.com/opinion/astrazeneca-lp-v-apotex-inc-njd-2009.