As we reported back in August, (Abbott and plaintiffs agree to proposed Norvir settlement), Abbott Laboratories (NYSE:ABT) and plaintiffs who brought a nationwide class action challenging Abbott’s 400% price increase on its HIV/AIDS drug Norvir agreed to a settlement of between $10 million and $27.5 million. Under the settlement, the amount that Abbott would have to pay would depend on whether the Ninth Circuit Court of Appeals accepts an appeal of certain key issues in the case, and how that Court ultimately rules on those questions. For a full description of the different scenarios, and amounts that Abbott would have to pay, see the earlier post here.

Yesterday, the Ninth Circuit Court of Appeals issued an order accepting the appeal. This allows the settlement process to move forward, although how much Abbott will have to pay will remain up in the air until the Ninth Circuit issues its actual decision on the appeal.

The order can be found here.

We’ve frequently reported here on the Prescription Access Litigation (PAL) blog about the class action lawsuit brought by PAL coalition member SEIU Health & Welfare Fund and others against Abbott Laboratories [NYSE:ABT], challenging Abbott’s December 2003 price increase of 400% on its HIV/AIDS drug, Norvir. That lawsuit alleged that Abbott’s price-hike was intended to increase the sales and market share of another Abbott HIV/AIDS drug, Kaletra.

We’re pleased to announce that SEIU Health & Welfare Fund, the two individual plaintiffs in the class action and Abbott agreed to a proposed settlement of the case on August 13, 2008. Abbott has agreed to pay between $10 Million and $27.5 Million, depending on court rulings to come, to settle the nationwide claims by consumers who were overcharged for the medicine.

There have been a number of important decisions by the Court to date that have set the stage for this settlement. On June 11, 2007, the Court certified the case as a nationwide class action. On May 16, 2008 the Court issued a ruling that was a partial victory for the plaintiffs and a partial victory for Abbott. The Court held that Abbott could not claim a patent that it holds on Norvir as a defense to the plaintiffs’ claims (the partial win for the plaintiffs). However, the Court also dismissed the plaintiffs’ claims for “unjust enrichment.” These claims alleged that Abbott was “unjustly enriched” by its allegedly illegal Norvir price hike.

What’s important about this dismissal is that these common law unjust enrichment claims were the only nationwide claims for monetary damages (as opposed to claims for “injunctive relief,” that is, for changes in company practices) in the case. When the Court dismissed these claims, the only claims for damages that remained in the case were under California state law. Thus, in a nutshell, after the Court’s May 16 order, the case for monetary damages was narrowed to cover just consumers and health plans in California.

Abbott had asked the Court to allow an “interlocutory appeal.” This means, basically, that Abbott asked the District Court to ask the 9th Circuit Court of Appeals to make a decision on a particular question of antitrust law that Abbott felt could determine the outcome of the case. The Court refused, since the trial was at that point only three months away.

The proposed settlement attempts to get the Court of Appeals to resolve this and several other legal issues, and to tie the amount of the settlement to the decisions of the Court of Appeals. Abbott and the plaintiffs will ask the court hearing the case (the federal District Court for the Northern District of California) to allow them to appeal three legal issues to the 9th Circuit immediately. These legal issues are ones that have been essential to the plaintiff’s success so far, and which Abbott would likely appeal if the plaintiffs were to win at trial.

There are several different forms the settlement could take, depending on how this appeal goes:

• If the District court ”certifies” all three questions up to the Ninth Circuit for appeal, and the Ninth Circuit accepts at least two of them, Abbott will pay a non-refundable $10 Million in to a settlement fund. That $10M (and possibly more – see below) would eventually be distributed to 13 different non-profit organizations that benefit people with HIV/AIDS. (See a list of those organizations here).
• How much Abbott would have to pay beyond the initial $10M depends on how the 9th Circuit rules on the appeals questions:
  • If Abbott wins the appeal of any of the three questions before the Ninth Circuit, then it doesn’t pay anything beyond the initial $10M.
  • If the plaintiffs win on all the questions before the 9th Circuit, then Abbott must contribute another $17.5 Million to the settlement fund.
  • If the 9th Circuit “remands” (sends back) the case to the District Court for any reason (such as asking the District Court to make findings of fact), then Abbott must contribute only $4.375 Million more to the settlement fund.

In a nutshell, Abbott will ultimately pay between $10M and $27.5M. After the attorneys’ fees and expenses are paid (approximately 1/3 of the total), here is how the rest of the settlement will be divided:

• If Abbott wins any one of the questions before the Ninth Circuit, then the $10M, reduced to $6-7 M after costs and attorneys’ fees, will be distributed equally to all the cy pres recipients on the list above.
• If, however, the court remands any question, or if the Plantiffs win all the questions, then the settlement amount ($14.3M or $27.5M respectively, before legal costs and fees, or between $9.6 and $18.4M after) will be divided, with
  • 70% of it (between $6.7M and $12.8M approximately) going to the 13 organizations described above, and
  • 30% (between $2.9M and $5.5M approximately) going to consumers and TPPs in California)

Confusing? Yes. But the settlement is a creative resolution of the lawsuit. It takes into account the different possible outcomes to a trial and inevitable appeal, and essentially adjusts the amount of the settlement accordingly.

The Court has scheduled a hearing for August 19 on whether to grant “preliminary approval” to the Settlement. If it does grant that approval, notice will be published to alert members of the class about the proposed settlement. Consumers and TPPs that paid for Norvir will have the option of opting out of the settlement (if they want to pursue their own individual lawsuits against Abbott), objecting to the terms of the settlement, and, if they are located in California, filing claims forms to receive a portion of the settlement proceeds. The Court will schedule a Final Approval hearing for several months from now. After that hearing, the Court will decide whether to grant Final Approval to the settlement. If it does grant that approval, and after any appeals, the money in the settlement will be distributed as described above.

To see a copy of the settlement, go here.

Other resources:

• A summary of the lawsuit challenging Abbott’s price hike of Norvir
• Earlier PAL blog entries on the plaintiff’s successful class certification, Abbott’s attempt to keep damaging documents from public view, or the plaintiff’s anti-trust claims.

We’ve written a lot on the past few months about the national class action lawsuit against Abbott Laboratories, targetting Abbott’s December 2003 400% price increase on its HIV/AIDS drug Norvir.

The case has survived Abbott’s numerous attempts to have it dismissed, and the Judge in the case recently forced Abbott to make public some embarrassing documents that Abbott wanted to keep hidden. (See What Abbott Laboratories was Trying to Hide – Court unseals Norvir documents).

A trial is scheduled to begin in the case in August. Given that very few pharmaceutical class actions actually go all the way to trial, this is noteworthy.

Two of the lawyers representing the plaintiffs in the case, including Prescription Access Litigation coalition member SEIU Health and Welfare Fund, recently wrote an analysis of the case in the Bureau of National Affairs publication, Pharmaceutical Law & Industry Report.

With BNA’s permission, we reprint this analysis here. It gives a good overview of the case, and of the Court’s recent rulings invalidating Abbott’s patent defenses. Bear in mind that it was written with a lawyer audience in mind… (A PDF version of this piece is available here)

In a May 16, 2008, ruling, Judge Claudia Wilken of the District Court for the Northern District of California effectively extinguished Abbott Laboratories’ hopes to avoid trial in a nationwide antitrust class action suit arising from its 400 percent price increase on Norvir, a drug that has revolutionized the treatment of HIV (6 PLIR 598, 5/23/08 a0b6n3r1r0 ).1 The Court’s ruling not only offers useful insight into the sometimes-murky issue of inherent anticipation, but also has far-reaching implications for pharmaceutical companies hoping to rely on patents to avoid allegations of anticompetitive conduct.

The Plaintiffs’ Sherman Act claims in In re Abbott Laboratories Antitrust Litigation are inextricably intertwined in the biology of the HIV virus itself. A longstanding challenge to scientists working to create effective treatments for HIV is the fact that the virus reproduces very rapidly, and mutates as it does so. These mutations permit the virus to rapidly gain resistance to new drugs as they are developed. Accordingly, innovation and competition in the marketplace for new HIV treatments is crucial: without it, patients will rapidly succumb to the disease as existing treatments fail.

Beginning in about the mid-1990s, researchers developed a promising new class of treatments for HIV disease called protease inhibitors (“PIs”). The advent of this powerful new class of drugs helped transform HIV disease from a death sentence into a chronic, manageable illness. Physicians used these PIs in combination with other HIV drugs to great effect, halting the disease in its tracks for many patients. However, as soon as PIs became available, the clock began running, as the virus rapidly acquired resistance to the new treatments.

In 1996 Abbott introduced a patented PI called Norvir, the brand name for ritonavir, to be used at a recommended daily dose of 1200 milligrams. Because of the drug’s debilitating side effects at this dose, it was rarely used. However, scientists and physicians soon noticed that Norvir had a striking effect on certain metabolic pathways in the liver, dramatically slowing the metabolism of many types of drugs, including PIs. When Norvir was taken with PIs, therapeutically effective blood levels of the PIs could be consistently maintained, and the PIs could be taken at smaller doses, sparing patients many of the severe side effects associated with the drugs. More importantly, Norvir’s “boosting” effect greatly impaired the virus’ ability to develop resistance to PIs. Norvir is the only commercially available drug known to have this effect.

Indeed, unless a patient takes Norvir together with a PI, the virus can rapidly develop resistance to the entire PI class. Accordingly, Norvir boosting has become part of the standard PI treatment. To enable patients to take these boosted PI regimens, Abbott sells Norvir pills to the public.

In 2000, Abbott capitalized on Norvir’s boosting properties by launching a pill called Kaletra, in which it combined a PI called lopinavir with a boosting dose of Norvir. Kaletra was the only single-pill treatment available that combined Norvir and a PI. While Kaletra was a very effective boosted PI treatment, it was associated with serious side effects, including hyperlipidemia, lipodystrophy, and gastric problems. Notwithstanding these problems, it quickly became the dominant boosted PI prescribed, and one of Abbott’s top primary-care products.

In 2003, however, Abbott’s lucrative Kaletra business was in peril. New PIs were about to be launched by Abbott rivals GlaxoSmithKline and Bristol Myers Squibb that, when boosted with Norvir, were just as effective as Kaletra, but better tolerated and more convenient.

What Abbott did next has become the subject of enormous controversy. In December of 2003, Abbott imposed a 400 percent price increase on the Norvir sold for use with rivals’ PIs, while leaving the price of Kaletra unchanged. Overnight, Kaletra became the cheapest boosted PI regimen on the market. According to Abbott’s rival, GlaxoSmithKline, this price hike has seriously affected sales of Glaxo’s effective new boosted PI, Lexiva.

In 2004, the plaintiffs in In re Abbott Labs Norvir Antitrust Litigation brought suit under Section 2 of the Sherman Act, arguing that Abbott used the Norvir price hike as a means to protect Kaletra from the competitive threat it faced from newer and safer drugs such as Lexiva. Abbott argued in its defense that it raised the price of Norvir in light of the increased clinical importance of the drug, and because it was being used in smaller doses as a booster than it was as a stand-alone PI.2

Abbott also mounted an affirmative defense of patent immunity premised on patents it claimed on the boosting method. In essence, Abbott argued that because it had patents on the method of using Norvir to boost PIs, it was entitled to exclude competitors from the market for Boosted PIs by any means it liked, including a Norvir price hike.

Indeed, Abbott’s boosting patents were a source of substantial revenue for the Company. As Abbott itself explained in documents filed with the Court, “[a]t considerable expense, Abbott’s four major competitors in the Boosted Market have taken a license to these patents for the express purpose of ‘promot[ing] and market[ing] certain of [their] products with Ritonavir for the purpose of co-prescription/co-administration.’”3

After bringing two unsuccessful motions for summary judgment in 2005 and 2006, Abbott filed a third motion in February of 2008, premised in part on its patent immunity defense. The benefits of this tactic seemed obvious. If the Company’s motion were successful, the pending case would be dismissed. If it lost, the complex patent arguments would still have to be resolved at trial, scheduled for Aug. 18.

That there was also substantial risk to Abbott’s strategy became apparent when, in response to the Company’s motion, Plaintiffs filed both an opposition to Abbott’s motion and a cross-motion of their own for partial summary judgment, attacking Abbott’s patents as invalid and asking that the Court bar the Company from asserting its patent immunity affirmative defense.

The validity arguments in Plaintiffs’ opposition and cross-motion turned in large part on the significance to be accorded language in the preambles to Abbott’s patents. Claim 9 of U.S. Patent No. 6,037,157 (the ’157 patent) states:

A method for increasing human blood levels of a drug which is metabolized by cytochrome P450 monooxygenase comprising administering to a human in need of such treatment a therapeutically effective amount of a combination of said drug or a pharmaceutically acceptable salt thereof and ritonavir or a pharmaceutically acceptable salt thereof.

Similarly, claim 21 of U.S. Patent No. 6,703,403 (the ’403 patent), which is dependent on claim 22 of the same patent. Claim 21 states:

A method for improving the pharmacokinetics of a drug which is metabolized by cytochrome P450 monooxygenase comprising administering to a human in need of such treatment an amount effective to inhibit cytochrome P450 monooxygenase of ritonavir or a pharmaceutically acceptable salt thereof.

Claim 22, in turn, states “the method of claim 21 wherein the drug which is metabolized by cytochrome P450 monooxygenase is an HIV protease inhibitor.”

In essence, both claims describe a method of using Norvir together with other drugs in order to benefit from its effects as a metabolic booster. The problem for Abbott, suggested the Plaintiffs, is that these patents were anticipated by U.S. Patent Number 5,674,882, which claims:

A method of inhibiting an HIV infection comprising administering to a human in need thereof a therapeutically effective amount of [Norvir] or a pharmaceutically acceptable salt thereof in combination with a therapeutically effective amount of another HIV protease inhibiting compound.

While all three patent claims describe a method of using Norvir in combination with other drugs, Abbott argued that the ’157 and ’403 patents differed from the earlier ’882 patent in that they claim the method of using Norvir with the intent to achieve a specific result–metabolic boosting.

In determining whether this statement of purpose supported precluded Plaintiffs’ anticipation arguments, the Court looked closely at the Federal Circuit’s 2003 decision in Jansen v. Rexall Sundown.4 In Jansen, the plaintiff sued a manufacturer of an over-the-counter vitamin supplement containing both folic acid and vitamin B12 for the contributory infringement of a patent which claims:

A method of treating or preventing macrocytic-megaloblastic anemia in humans which anemia is caused by either folic acid deficiency or by vitamin B12 deficiency which comprises administering a daily dosage of a vitamin preparation to a human in need thereof comprising at least about .5 mg of vitamin B12 and at least .5 mg of folic acid.

In determining that the claim was not infringed, the Jansen court held that “administering the claimed vitamins in the claimed doses for some purpose other than treating or preventing macrocytic-megaloblastic anemia is not practicing the claimed method, because Jansen limited his claims to treatment or prevention of that particular condition in those who need such treatment of prevention.”5 In this respect, the preamble of the patent claim, describing the purpose for administering the vitamins, “gave life and meaning” to the patent. Id.

The Court rejected Abbott’s argument that the preambles to the ’157 and ’403 patents similarly gave life and meaning to the ’157 and ’403 patents beyond what was described in the ’882 patent. The Court held that

In Jansen, the preamble language was construed as a limitation because it disclosed a specific theretofore unknown use for taking a combination of folic acid and vitamin B12–namely, the prevention and treatment of macrocytic-megaloblastic anemia. The preamble gave “life and meaning” to the claim because without it, the patent would simply recite a method that was already practiced. Here, the preamble does not disclose a new use for the prior art…. The preamble simply expresses one of the necessary results of practicing the existing method. Abbott cannot patent the practice of prior art by framing a necessary result of that practice as a claim-limiting purpose.

The Court’s ruling has dramatic consequences for the Company. Abbott now faces trial on Plaintiffs’ antitrust claims bereft of its principal defense. In light of the fact that Plaintiffs in the In re Abbott Laboratories Norvir Antitrust Case seek not only damages but nationwide injunctive relief, a loss at trial in August could have significant repercussions for the Company’s business. Moreover, a verdict against Abbott will also have preclusive effect with respect to many of the factual issues that will be tried in the cases brought by Glaxo and by the direct purchasers.

The Court’s patent ruling also has important strategic implications for industry observers. In attempting to dismiss Plaintiffs’ antitrust claims, the Company risked and lost valuable intellectual property–patents made more valuable by the fact that Norvir has shown promise as a metabolic booster to drugs used to treat other disease states as well, such as hepatitis. Even without the benefit of a victory at trial, Plaintiffs have significantly altered the playing field in the market for boosted PIs by undercutting Abbott’s claims on this crucial new technology. The Court’s decision thus stands as a caution for companies seeking to press intellectual property into service as a defense in antitrust cases.

Footnotes:
1 In re Abbott Labs Norvir Antitrust Litigation, 2008 WL 2095516 (N.D.Cal. May 16, 2008).

2 In 2007, direct purchasers of Norvir and Abbott’s rival GlaxoSmithKline together filed six more suits, making similar allegations.

3 Abbott Laboratories’ February 13, 2008 Motion for Summary Judgment, Docket No. 445.

4 342 F.3d 1329 (Fed. Cir. 2003).

5 Jansen, 342 F.3d at 1334, cited at page 15 of Judge Wilken’s opinion.

Hollis Salzman (hsalzman@labaton.com) is a partner at Labaton Sucharow LLP. Michael Stocker (mstocker@labaton.com) is an associate with the firm. Labaton Sucharow represents the Service Employees International Union Health and Welfare Fund in pending litigation against Abbott Laboratories. BNA welcomes other views on the litigation.

Reproduced with permission from Pharmaceutical Law & Industry Report, Vol. 6, No. 25 (June 20, 2008), p. 721. Copyright 2008 by The Bureau of National Affairs, Inc. (800-372-1033) http://www.bna.com

In June, we reported that the Judge hearing the class action lawsuit against Abbott Laboratories for its Norvir price hike had certified the case as a nationwide class action (“Judge certifies class action in Norvir case“). Back in October 2004, PAL member SEIU Health & Welfare Fund filed a class action lawsuit against Abbott Laboratories (NYSE:ABT), alleging that Abbott’s 400% price increase for its HIV/AIDS drug Norvir violated federal antitrust laws. (In re Abbott Laboratories Norvir Antitrust Litigation, Case 4:04-CV-01511)

Abbott Laboratories asked the 9th Circuit Court of Appeals for permission to appeal that decision to certify the class. As we explained back in June:

Class Certification is the stage at which the Judge determines whether or not the lawsuit can proceed as a class action or not. Given that any individual patient’s financial harm is comparatively small, class actions are almost always the only way in which illegal pharmaceutical industry behavior such as that alleged in this case can be challenged. The cost of bringing an individual lawsuit to challenge actions such as this would outweigh that individual financial harm by orders of magnitude. Class Actions allow for thousand or even millions of individuals to combine their claims into one lawsuit that challenges the actions that caused harm to all of them….

Class certification is a watershed moment for a class action. If Class certification is denied, that is often the end of the case, since most class actions cannot feasibly be pursued as individual lawsuits. The Judge’s granting of class certification is an important intermediate success in this case.

Last Thursday (9/13), the 9th Circuit Court of Appeals denied Abbott’s request for permission to file an appeal. Thus, the case against Abbott will proceed.

The 9th Circuit’s decision was just an entry on the Court’s docket. The Judge’s Order granting class certification can be found here.