Justia Drugs & Biotech Opinion Summaries

Athena Diagnostics is the exclusive licensee of the 820 patent, covering methods for diagnosing neurological disorders by detecting antibodies to a protein called muscle-specific tyrosine kinase (MuSK), which is associated with Myasthenia gravis (MG), a neurological disorder where patients experience muscle weakness and symptoms including drooping eyelids, double vision, and slurred speech. Athena markets a test (FMUSK) that functions by evaluating those antibodies. After Mayo developed two competing tests, Athena accused Mayo of infringing its patent. The Federal Circuit affirmed that the asserted claims of the 820 patent are invalid under 35 U.S.C. 101, for claiming ineligible subject matter. The claims at issue are directed to a natural law and lack an inventive concept. View "Athena Diagnostics, Inc. v. Mayo Collaborative Services, LLC" on Justia Law

RCT owns the 551 patent, which discloses and claims enantiomeric compounds and pharmaceutical compositions useful in the treatment of epilepsy and other central nervous system disorders. The Patent and Trademark Office Patent Trial and Appeal Board, in an inter partes review, concluded that claims 1–13 of the patent are not unpatentable. The Federal Circuit affirmed, rejecting an argument that an ordinary artisan would have recognized the methoxyamino group in compound 3l (disclosed in a prior reference) to be uncommon and to have potential synthetic and stability problems and that a person of skill in the art would then have been motivated to modify compound 3l by replacing the amine of its methoxyamino group with a methylene link to yield a more stable, synthetically accessible, pharmaceutically common and acceptable moiety. The Board’s findings are supported by substantial evidence. Even if a person of skill in the art would have been motivated to modify compound 3l, the evidence suggests that compounds without a methoxyamino or nitrogen-containing group at the αcarbon had reduced activity. View "Mylan Pharmaceuticals Inc. v. Research Corporation Technologies, Inc." on Justia Law

Dr. Barry’s patents, entitled “System and Method for Aligning Vertebrae in the Amelioration of Aberrant Spinal Column Deviation Conditions,” claim methods and systems for correcting spinal column anomalies, such as those due to scoliosis, by applying force to multiple vertebrae at once. Dr. Barry sued Medtronic, alleging that Medtronic induced surgeons to infringe the patents. The jury found infringement of method claims 4 and 5 of the 358 patent and system claims 2, 3, and 4 of the 121 patent, rejected Medtronic’s several invalidity defenses, and awarded damages. In post-trial rulings on the jury issues, the district court upheld the verdict, rejecting challenges as to induced infringement and associated damages for domestic conduct, invalidity of the asserted 358 patent claims under the public-use and on-sale bars, and invalidity of all asserted claims due to another’s prior invention. The district court then rejected Medtronic’s inequitable-conduct challenge and enhanced damages by 20 percent while denying attorney’s fees to Dr. Barry, The Federal Circuit affirmed, rejecting several arguments by Medtronics, principally concerning the public-use and on-sale statutory bars, but also concerning prior invention, inequitable conduct, and induced infringement and associated damages. View "Barry v. Medtronic, Inc." on Justia Law

Helsinn makes a treatment for chemotherapy-induced nausea using the chemical palonosetron. While developing that product, Helsinn granted another company the right to market a 0.25 mg dose of palonosetron in the United States; that company was required to keep proprietary information confidential. Nearly two years later, in 2003, Helsinn filed a provisional patent application covering a 0.25 mg dose of palonosetron. Helsinn filed four patent applications that claimed priority to the 2003 date. Helsinn’s fourth application, filed in 2013 (the 219 patent), is covered by the Leahy-Smith America Invents Act (AIA). In 2011, Teva sought approval to market a generic 0.25 mg palonosetron product. Helsinn sued for infringement. Teva countered that the 219 patent was invalid under the “on sale” provision of the AIA, which precludes a person from obtaining a patent on an invention that was “in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention,” 35 U.S.C. 102(a)(1), arguing the 0.25 mg dose was “on sale” more than one year before Helsinn filed the 2003 application.The Federal Circuit held, and the Supreme Court unanimously agreed, that the sale was publicly disclosed, regardless of whether the details of the invention were publicly disclosed in the agreements. A commercial sale to a third party who is required to keep the invention confidential may place the invention “on sale” under section 102(a). The patent statute in force immediately before the AIA included an on-sale bar. Supreme Court and Federal Circuit precedent interpreting that provision indicated that a sale or offer of sale need not make an invention available to the public to constitute invalidating prior art. The Court applied the presumption that when Congress reenacted the “on sale” language in the AIA, it adopted earlier judicial constructions. View "Helsinn Healthcare S. A. v. Teva Pharmaceuticals USA, Inc." on Justia Law

Acorda’s patents claim the administration of a medication containing the active ingredient 4- aminopyridine (4-AP) to improve walking in individuals with multiple sclerosis. Acorda holds an FDA-approved New Drug Application and markets, under the name “Ampyra®,” 10 milligram 4-AP sustained-release tablets for twice-daily oral administration and holds an exclusive license to the earlier, broader “Elan patent,” which is listed in the FDA Orange Book for Ampyra with the Acorda patents, and claims methods of treating patients having certain conditions, including multiple sclerosis, by administering a drug containing a sustained-release formulation of any of certain agents, including 4-AP. Defendants sought FDA approval to market generic versions of Ampyra. In Acorda's infringement suit, the district court held that the asserted claims in the Acorda patents are invalid for obviousness but upheld the Elan patent and enjoined infringement of that patent until it expired in July 2018. The Federal Circuit affirmed that the asserted Acorda patent claims are invalid, discounting the weight of Acorda’s evidence of commercial success, failure of others, and long-felt but unmet need. The court noted the Elan patent issued in 1996 and was licensed exclusively to Acorda in 1997 for spinal cord injury and in 1998 for multiple sclerosis treatment, which blocked others from domestic marketing without risk of infringement and deterred other entities from investing in research whose reward depended on marketing a drug like Ampyra. View "Acorda Therapeutics, Inc. v. Roxane Laboratories, Inc." on Justia Law

Orexo’s 330 Patent, entitled “Abuse-Resistant Pharmaceutical Composition for the Treatment of Opioid Dependence,” claims a product having the brand name Zubsolv®, approved by the FDA for treatment of opioid dependence. Actavis filed an Abbreviated New Drug Application for a generic counterpart of Zubsolv, accompanied by a Paragraph IV certification, leading to Hatch-Waxman litigation under 21 U.S.C. 355(j) and 35 U.S.C. 271(e)(2)(A). The Federal Circuit reversed a finding of obviousness. The question is not whether the references separately taught components of the 330 Patent formulation, but whether the prior art suggested the selection and combination achieved by the 330 inventors. The district court erred in discounting the enhanced bioavailability in the 330 patent’s formulation as “a ‘difference in degree,’ not a difference in ‘kind.’” The clinical studies reported in the 330 Patent show 66% improved bioavailability. In the context of this invention, this is more than a trivial “degree.” View "Orexo AB v. Actavis Elizabeth, LLC" on Justia Law

The Jazz patents relate to a drug distribution system for tracking prescriptions of a “sensitive drug.” “A sensitive drug is one which can be abused, or has addiction properties or other properties that render the drug sensitive.” One such sensitive drug is Xyrem®. Jazz exclusively markets Xyrem®, which the FDA has approved to treat symptoms associated with narcolepsy. The active ingredient in Xyrem®, gamma-hydroxybutyrate (GHB), may also be illicitly used as a “date-rape drug.” Under the Controlled Substances Act any approved drug product containing GHB is classified as a Schedule III depressant, so the FDA approved Xyrem® under “restricted distribution regulations contained in [21 C.F.R. 314.500] (Subpart H) to assure safe use of the product.” On inter partes review, the Patent Board found certain claims invalid as obvious. The Federal Circuit affirmed, upholding a conclusion that implementing prior art, consisting of background materials and the meeting minutes, transcript, and slides on the FDA website, on multiple computers “would have been a predictable use of a known distributed data system according to its established function.” View "Jazz Pharmaceuticals, Inc.. v. Amneal Pharmaceuticals, LLC" on Justia Law

Endo holds the approved New Drug Application for Aveed®, a testosterone undecanoate intramuscular injection. Bayer owns the 640 and 395 patents listed in the Orange Book for Aveed®. Custopharm’s predecessor submitted an Abbreviated New Drug Application (ANDA) to the FDA for approval to produce and market a generic version of Aveed® and made a Paragraph IV certification and gave notice of the certification to Endo and Bayer in October 2014. Endo and Bayer brought an action alleging infringement of the 640 and 395 patents. Custopharm stipulated to infringement; Endo and Bayer limited their asserted claims to claim 2 of the 640 patent and claim 18 of the 395 patent. After a bench trial on invalidity, the district court concluded that Custopharm had not proven that the claims were invalid under 35 U.S.C. 103. The Federal Circuit affirmed. Custopharm failed to meet its burden of showing that a skilled artisan would combine a lowered dose with the injection schedule in the manner claimed. View "Endo Pharmaceuticals Solutions, Inc. v. Custopharm Inc." on Justia Law

Triptans are selective serotonin receptor agonists, developed in the 1980s. When Zolmitriptan became available in the U.S. in oral tablet form in 1999 under the name Zomig® it was among several triptans on the market or under development. AstraZeneca owns the 237 and 767 patents, which relate to formulations of zolmitriptan for intranasal administration, and the New Drug Application for Zomig® (zolmitriptan) Nasal Spray, approved by the FDA for treatment of migraines. The patents are listed in connection with Zomig® Nasal Spray in the FDA’s Approved Drug Products with Therapeutic Equivalence Evaluations (Orange Book). In 2012, AstraZeneca and Impax entered into an agreement, granting Impax an exclusive license to AstraZeneca’s patents covering the Zomig® products, for the payment of $130 million and additional payments at varying royalty rates. In 2014, Lannett notified AstraZeneca that it had filed an Abbreviated New Drug Application, seeking approval for a generic version of Zomig® Nasal Spray, with a Paragraph IV certification (21 U.S.C. 355(j)(2)(A)(vii)(IV)), alleging noninfringement or invalidity of the 237 and 767 patents. In the subsequent infringement suit, 35 U.S.C. 271(e)(2)(A), the district court issued its claim construction opinion, the parties stipulated to infringement, and the court held that Lannett failed to prove by clear and convincing evidence that the asserted claims were invalid or would have been obvious over prior art. The Federal Circuit affirmed, upholding the entry of an injunction. View "Impax Laboratories Inc. v. Lannett Holdings Inc." on Justia Law

The 551 patent discloses and claims lacosamide, the active ingredient in Vimpat®, a drug that treats epilepsy and other central nervous system disorders. UCB holds New Drug Applications that cover the FDA approval of Vimpat®. The 551 patent is listed in the FDA’s Approved Drug Products With Therapeutic Equivalence Evaluations (Orange Book). Generic drug manufacturers filed Abbreviated New Drug Applications (ANDAs), seeking approval for generic versions of Vimpat®. Pursuant to the governing Hatch-Waxman Act provisions, they certified in their ANDAs that the 551 patent is invalid, unenforceable, or that their proposed generic lacosamide products will not infringe the patent. UCB sued and the generic manufacturers stipulated to infringement of claims 9, 10, and 13 but maintained that these claims are invalid for obviousness-type double patenting, 35 U.S.C. 101, obviousness, and anticipation. The district court concluded that the asserted claims are not invalid. The Federal Circuit affirmed, holding that the district court applied the correct legal standards and that there was no clear error in its underlying fact findings. The district court did not err by focusing its double patenting analysis on the claims’ differences, as well as the claims as a whole. View "UCB, Inc. v. Accord Healthcare, Inc." on Justia Law