RESUMEN
This study evaluates the frequency of terminal disclaimers filed by drug patent holders to obviate obviousness-type double patenting rejections associated with drug patent thickets.
Asunto(s)
Industria Farmacéutica , Patentes como Asunto , Industria Farmacéutica/economía , Industria Farmacéutica/legislación & jurisprudencia , Estados Unidos , Honorarios Farmacéuticos/legislación & jurisprudencia , Biosimilares Farmacéuticos/economía , Medicamentos Genéricos/economía , Competencia Económica/economía , Competencia Económica/legislación & jurisprudenciaRESUMEN
This study examines the use of the Track One prioritized patent examination program by pharmaceutical manufacturers from 2011 to 2022.
Asunto(s)
Patentes como Asunto , Patentes como Asunto/legislación & jurisprudencia , Humanos , Industria Farmacéutica/legislación & jurisprudencia , Estados Unidos , Preparaciones FarmacéuticasRESUMEN
Importance: Brand-name drugs are sold at high prices in the US during market exclusivity periods protected by patents. Multiple overlapping patents protecting a drug are known as patent thickets and can effectively delay the emergence of price-lowering generic competition for many years. Objective: To evaluate the composition of patent thickets of 10 top-selling prescription drugs in the US and compare the characteristics of drug patents filed during development with those filed on these products after US Food and Drug Administration (FDA) approval. Design and Setting: This cross-sectional study examined US patent thickets of the 10 prescription drugs with the highest US net sales revenue in 2021 using information on issued patents and patent applications as of June 30, 2022, obtained from a public database by the Initiative for Medicines, Access, and Knowledge. Data were analyzed from September 2022 to June 2023. Main Outcomes and Measures: Prevalence of patents filed before and after FDA approval; types of claims present in issued patents (ie, chemical composition, method of use, process or synthesis, formulation, and delivery device); and patent thicket density (number of active patents at a given time). Results: The 10 top-selling prescription drugs in the US for 2021 included 4 small-molecule drugs and 6 biologics. These 10 drugs were linked to 1429 patents and patent applications: 742 (52%) issued patents, 218 (15%) pending applications, and 469 (33%) abandoned applications. Almost three-quarters of patent applications (1028 [72%]) were filed after FDA approval. The postapproval proportion was higher for biologics (80%) than for small-molecule drugs (58%). Postapproval filing of patent applications peaked in the first 5 years after FDA approval for small-molecule drugs and 12 years after FDA approval for biologics. Of 465 patents issued for applications filed after FDA approval, 189 (41%) had method of use claims, 127 (27%) had formulation claims, and 103 (22%) had process or synthesis claims, while 86 (19%) had chemical composition claims and 46 (10%) had device claims. Patent thicket density peaked 13 years after FDA approval, at which time these 10 drugs were protected by a median (IQR) of 42 (18-83) active patents, 66% of which were filed after FDA approval. Conclusions and Relevance: This study found that among the 10 top-selling prescription drugs in the US in 2021, patents filed after FDA approval and containing claims covering aspects other than the active ingredient of the drug contributed to patent thickets. Scrutiny of patent applications and of patents filed after FDA approval is needed to facilitate timely generic or biosimilar competition.
Asunto(s)
Medicamentos Genéricos , Patentes como Asunto , Medicamentos bajo Prescripción , Medicamentos bajo Prescripción/economía , Estudios Transversales , Estados Unidos , Humanos , Medicamentos Genéricos/economía , United States Food and Drug Administration , Industria Farmacéutica/legislación & jurisprudencia , Industria Farmacéutica/economía , Aprobación de DrogasRESUMEN
Objective: To investigated the safety and efficacy of donor-derived CD19+ or sequential CD19+ CD22+ chimeric antigen receptor T-cell (CAR-T) therapy in patients with B-cell acute lymphoblastic leukemia (B-ALL) after allogeneic hematopoietic stem cell transplantation (allo-HSCT). Methods: The data of 22 patients with B-ALL who relapsed after allo-HSCT and who underwent donor-derived CAR-T therapy at the Zhujiang Hospital of Southern Medical University and the 920th Hospital of Joint Logistics Support Force of the People's Liberation Army of China from September 2015 to December 2022 were retrospectively analyzed. The primary endpoint was overall survival (OS), and the secondary endpoints were event-free survival (EFS), complete remission (CR) rate, and Grade 3-4 adverse events. Results: A total of 81.82% (n=18) of the 22 patients achieved minimal residual disease-negative CR after CAR-T infusion. The median follow-up time was 1037 (95% CI 546-1509) days, and the median OS and EFS were 287 (95% CI 132-441) days and 212 (95% CI 120-303) days, respectively. The 6-month OS and EFS rates were 67.90% (95% CI 48.30%-84.50%) and 58.70% (95% CI 37.92%-79.48%), respectively, and the 1-year OS and EFS rates were 41.10% (95% CI 19.15%-63.05%) and 34.30% (95% CI 13.92%-54.68%), respectively. Grade 1-2 cytokine release syndrome occurred in 36.36% (n=8) of the patients, and grade 3-4 occurred in 13.64% of the patients (n=3). Grade 2 and 4 graft-versus-host disease occurred in two patients. Conclusion: Donor-derived CAR-T therapy is safe and effective in patients with relapsed B-ALL after allo-HSCT.
Asunto(s)
Linfoma de Burkitt , Trasplante de Células Madre Hematopoyéticas , Leucemia-Linfoma Linfoblástico de Células Precursoras B , Leucemia-Linfoma Linfoblástico de Células Precursoras , Receptores Quiméricos de Antígenos , Humanos , Estudios Retrospectivos , Leucemia-Linfoma Linfoblástico de Células Precursoras/terapia , Leucemia-Linfoma Linfoblástico de Células Precursoras B/terapia , Inmunoterapia Adoptiva/efectos adversos , Antígenos CD19 , Respuesta Patológica Completa , Síndrome de Liberación de Citoquinas/etiologíaRESUMEN
This cross-sectional study identifies the prevalence of patents on risk evaluation and mitigation strategies and their association with delaying generic competition.
Asunto(s)
Medicamentos Genéricos , Patentes como Asunto , Medicamentos bajo Prescripción , Evaluación y Mitigación de Riesgos , Costos de los Medicamentos , Industria Farmacéutica , Medicamentos Genéricos/uso terapéutico , Competencia Económica , Evaluación y Mitigación de Riesgos/legislación & jurisprudencia , Estados Unidos , Patentes como Asunto/legislación & jurisprudenciaRESUMEN
This study analyzed the US Food and Drug Administrationlisted patents on glucagon-like peptide 1 (GLP-1) receptor agonists to determine their claim characteristics and the potential barriers they pose to generic entry.
Asunto(s)
Diabetes Mellitus Tipo 2 , Agonistas Receptor de Péptidos Similares al Glucagón , Hipoglucemiantes , Legislación de Dispositivos Médicos , Patentes como Asunto , Humanos , Diabetes Mellitus Tipo 2/tratamiento farmacológico , Péptido 1 Similar al Glucagón/agonistas , Receptor del Péptido 1 Similar al Glucagón/agonistas , Agonistas Receptor de Péptidos Similares al Glucagón/administración & dosificación , Agonistas Receptor de Péptidos Similares al Glucagón/uso terapéutico , Hipoglucemiantes/administración & dosificación , Hipoglucemiantes/uso terapéuticoRESUMEN
We investigated the high energy spin excitations in electron-doped La_{2-x}Ce_{x}CuO_{4}, a cuprate superconductor, by resonant inelastic x-ray scattering (RIXS) measurements. Efforts were paid to disentangle the paramagnon signal from non-spin-flip spectral weight mixing in the RIXS spectrum at Q_{â¥}=(0.6π,0) and (0.9π,0) along the (1 0) direction. Our results show that, for doping level x from 0.07 to 0.185, the variation of the paramagnon excitation energy is marginal. We discuss the implication of our results in connection with the evolution of the electron correlation strength in this system.
RESUMEN
Patents prevent generic drug entry. Brand firms file new "method of use" patents for old drugs to prevent generic entry. Congress addressed this issue by creating the "skinny label" pathway, which allows generic firms to use the drug label to indicate that the old drug can only be used for non-patented uses. This pathway is now in jeopardy due to a recent court case. This paper outlines the issues and suggests possible legislative solutions.
Asunto(s)
Industria Farmacéutica , Medicamentos Genéricos , Humanos , Estados Unidos , Etiquetado de Medicamentos , Legislación de Medicamentos , Costos de los MedicamentosRESUMEN
This study analyzes the use and timing of terminal disclaimers in all biologic patents involved in litigation from 2010 to 2023.
Asunto(s)
Productos Biológicos , Patentes como Asunto , Productos Biológicos/uso terapéuticoRESUMEN
This study examines all patents associated with biologic litigation to understand how manufacturers use ancillary product patents to delay biosimilar market entry.
Asunto(s)
Productos Biológicos , Biosimilares Farmacéuticos , Patentes como Asunto , Productos Biológicos/uso terapéutico , Aprobación de Drogas , Industria Farmacéutica , Competencia Económica , Estados Unidos , Factores de TiempoRESUMEN
This study examines the frequency of drug patent invalidations based on inequitable conduct.
Asunto(s)
Patentes como Asunto , Preparaciones Farmacéuticas , Mala Conducta Científica , United States Food and Drug Administration , Patentes como Asunto/ética , Patentes como Asunto/legislación & jurisprudencia , Mala Conducta Científica/ética , Mala Conducta Científica/legislación & jurisprudencia , Estados UnidosRESUMEN
Bioprinting is an additive manufacturing process used to create architectures that mimic natural living tissues in form and function [1]. It involves the deposition of bioink, which can include a mixture of living cells, nutrients, and extracellular matrix. The bioink is then deposited onto a scaffold to generate 3-D structures that imitate natural tissues and organs. This process has already been used to generate a diverse range of products, including bioprinted human ears for transplant, and 3-D printed bioceramic and modified biopolymer bone implants that received U.S. Food and Drug Administration (FDA) marketing approval [2] Researchers are working on bioprinted versions of a wide range of organs, including liver, kidney, lung, and heart.
Asunto(s)
Bioimpresión , Ingeniería de Tejidos , Humanos , Andamios del Tejido/química , Matriz Extracelular/química , Impresión TridimensionalRESUMEN
This Viewpoint looks at the lawsuits brought by pharmaceutical companies to challenge the Inflation Reduction Act of 2022, in particular claims under the First Amendment's protection of free speech.
Asunto(s)
Derechos Civiles , Habla , Derechos Civiles/legislación & jurisprudencia , Estados UnidosRESUMEN
This study assesses the frequency of continuation patents on brand-name drugs approved by the US Food and Drug Administration from 2000 to 2015.
Asunto(s)
Costos de los Medicamentos , Competencia Económica , Patentes como Asunto , Aprobación de Drogas/estadística & datos numéricos , Costos de los Medicamentos/estadística & datos numéricos , Medicamentos Genéricos/uso terapéutico , Estados Unidos/epidemiología , United States Food and Drug Administration , Patentes como Asunto/estadística & datos numéricosRESUMEN
Importance: Glucagon-like peptide 1 (GLP-1) receptor agonists were first approved for the treatment of type 2 diabetes in 2005. Demand for these drugs has increased rapidly in recent years, as indications have expanded, but they remain expensive. Objective: To analyze how manufacturers of brand-name GLP-1 receptor agonists have used the patent and regulatory systems to extend periods of market exclusivity. Evidence Review: The annual US Food and Drug Administration's (FDA) Approved Drug Products With Therapeutic Equivalence Evaluations was used to identify GLP-1 receptor agonists approved from 2005 to 2021 and to record patents and nonpatent statutory exclusivities listed for each product. Google Patents was used to extract additional data on patents, including whether each was obtained on the delivery device or another aspect of the product. The primary outcome was the duration of expected protection from generic competition, defined as the time elapsed from FDA approval until expiration of the last-to-expire patent or regulatory exclusivity. Findings: On the 10 GLP-1 receptor agonists included in the cohort, drug manufacturers listed with the FDA a median of 19.5 patents (IQR, 9.0-25.8) per product, including a median of 17 patents (IQR, 8.3-22.8) filed before FDA approval and 1.5 (IQR, 0-2.8) filed after FDA approval. Fifty-four percent of all patents listed on GLP-1 receptor agonists were on the delivery devices rather than active ingredients. Manufacturers augmented patent protection with a median of 2 regulatory exclusivities (IQR, 0-3) obtained at approval and 1 (IQR, 0.3-4.3) added after approval. The median total duration of expected protection after FDA approval, when accounting for both preapproval and postapproval patents and regulatory exclusivities, was 18.3 years (IQR, 16.0-19.4). No generic firm has successfully challenged patents on GLP-1 receptor agonists to gain FDA approval. Conclusions and Relevance: Patent and regulatory reform is needed to ensure timely generic entry of GLP-1 receptor agonists to the market.