Rayos Patent Expiration

Rayos is a drug owned by Horizon Therapeutics Usa Inc. It is protected by 8 US drug patents filed from 2013 to 2016. Out of these, 2 drug patents are active and 6 have expired. Based on its patents and exclusivities, its generic launch date is estimated to be Jan 07, 2028. Details of Rayos's patents and their expiration are given in the table below.

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Drug Patent Number Drug Patent Title Drug Patent Expiry Status
These drug patents focus on the other aspects of the drug like dosage, mode of administration (oral, tablet, capsules, liquids etc).
US8168218 Delayed release tablet with defined core geometry
Jan, 2028

(1 year, 3 months from now)

Active
US9504699 Delayed-release glucocorticoid treatment of rheumatoid disease
Aug, 2027

(9 months from now)

Active
US8394407 Delayed release tablet with defined core geometry
Apr, 2024

(2 years ago)

Expired
US8309124 Delayed release tablet with defined core geometry
Apr, 2024

(2 years ago)

Expired
US9186332 Delayed release tablet with defined core geometry
Apr, 2024

(2 years ago)

Expired
US9040085 Delayed release tablet with defined core geometry
Apr, 2024

(2 years ago)

Expired
US6488960 Corticosteroid formulation
Mar, 2020

(6 years ago)

Expired
US6677326 Corticosteroid formulation comprising less than 2.5 mg prednisolone for once daily administration
Mar, 2020

(6 years ago)

Expired


A patent's expiry date may change depending upon legal activities going on that patent. Critical activities like abandoning of a patent, term extension of a patent or amendment of its claims can increase or decrease the life of a patent hence affecting its expiry date and in turn affecting the generic launch date of that drug. Tracking these ongoing activities on a patent application helps to keep an eye on the latest developments in the patent process of the drug which can give an idea of how early a drug's generic could be available. The next section provides a list of recent legal activities on Rayos's patents.

Given below is the list of recent legal activities going on the following patents of Rayos.

Activity Date Patent Number
Patent litigations
Expire Patent 14 Apr, 2025 US8394407 (Litigated)
Refund - Payment of Maintenance Fee, 12th Year, Large Entity 14 Jan, 2025 US8309124 (Litigated)
Refund - 11.5 yr surcharge - late pmt w/in 6 mo, Large Entity 14 Jan, 2025 US8309124 (Litigated)
Maintenance Fee Reminder Mailed 28 Oct, 2024 US8394407 (Litigated)
Payment of Maintenance Fee, 12th Year, Large Entity 24 May, 2024 US8309124 (Litigated)
11.5 yr surcharge- late pmt w/in 6 mo, Large Entity 24 May, 2024 US8309124 (Litigated)
Payment of Maintenance Fee, 8th Year, Large Entity 23 May, 2024 US9504699
Payment of Maintenance Fee, 12th Year, Large Entity 24 Oct, 2023 US8168218 (Litigated)
Payment of Maintenance Fee, 8th Year, Large Entity 09 May, 2023 US9186332
Payment of Maintenance Fee, 8th Year, Large Entity 16 Nov, 2022 US9040085


FDA has granted several exclusivities to Rayos. Till the time these exclusivities are active, no other company can market a generic or bioequivalent version of Rayos, regardless of the status of it's patents. These exclusivities hence play a crucial role in delaying the generic launch. Given below are details of the exclusivities granted to Rayos.

Exclusivity Information

Rayos holds 1 exclusivities. All of its exclusivities have expired in 2015. Details of Rayos's exclusivity codes and their expiration dates are given below.


Drug Exclusivity Drug Exclusivity Expiration
M(M-128) Jul 26, 2015

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Several oppositions have been filed on Rayos's European patents. EP oppositions can significantly impact the timeline for the generic launch of drugs. If an opposition results in the revocation or amendment of a patent, it can shorten the exclusivity period of the original drug. This can lead to an earlier entry of generic versions into the market. To help you estimate the potential early arrival of Rayos's generic, the next section provides detailed information on ongoing and past EP oppositions related to Rayos patents.

Rayos's Oppositions Filed in EPO

Rayos has faced multiple oppositions in the European Patent Office. The earliest opposition was filed on Jul 31, 2013, by Laboratorios Liconsa, S.A.. This opposition was filed on patent number EP07801510A. Click below to reveal the latest opposition data.


Application Filing Date Opposition Party Legal Status
Patent litigations
EP07801510A Jul, 2013 Laboratorios Liconsa, S.A. Patent maintained as amended


US patents provide insights into the exclusivity only within the United States, but Rayos is protected by patents in multiple countries. Understanding the full scope of patent protection is crucial in strategizing market entry. By looking at the broader patent landscape, you can identify markets with weaker patent protection which could be ideal generic entry points. The following section offers details on Rayos's family patents as well as insights into ongoing legal events on those patents.

Rayos's Family Patents

Rayos has patent protection in a total of 31 countries. It's US patent count contributes only to 21.9% of its total global patent coverage. 7 countries have all of their patents expired or invalidated which has opened up potential generic launch opportunities in these countries. Click below to unlock the full patent family tree for Rayos.

Family Patents

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Clinical Trials

Recent Clinical Trials on Rayos:

Sometimes companies keep conducting clinical trials even after the drug's approval to discover new formulations, methods of use, or new treatment indications, so they could file for additional patents or receive regulatory exclusivity extensions, such as pediatric exclusivity, potentially delaying generic competition. Based on these recent clinical trials, generic companies need to consider the potential for new intellectual property or regulatory hurdles. These strategic moves by the drug owner might delay generic substitution or lead to additional sales of the brand drug, even after patent expiry.

Title Lead Sponsor Collaborators Status Phases
Clinical Trials
Study of Sirolimus in Idiopathic Retroperitoneal Fibrosis Peking University International Hospital NA COMPLETED
(Sep 1, 2026)
PHASE2, PHASE3
A Study of Nipocalimab in Participants With Active Idiopathic Inflammatory Myopathies Janssen Research & Development, LLC NA ACTIVE NOT RECRUITING
(Sep 1, 2026)
PHASE2
Ivarmacitinib Versus Glucocorticoids in Mild-to-Moderate Systemic Lupus Erythematosus Chinese SLE Treatment And Research Group NA NOT YET RECRUITING
(Sep 1, 2026)
PHASE2, PHASE3
Proactively Intervening On Early Cranial Nerve Injury As A Delayed Sequela Of Oropharyngeal Cancer: A Randomized Feasibility Clinical Trial For Pro-Habilitation (proNERVE RCT) M.D. Anderson Cancer Center NA NOT YET RECRUITING
(Sep 1, 2026)
PHASE1
Immunotherapy in Combination With Prednisone and Sirolimus for Kidney Transplant Recipients With Unresectable or Metastatic Skin Cancer National Cancer Institute (NCI) NA RECRUITING
(Aug 1, 2026)
PHASE1, PHASE2
Hyperpolarized (HP) 13C Pyruvate Magnetic Resonance Imaging (MRI) for Response Monitoring to Neoadjuvant Abiraterone Ivan de Kouchkovsky, MD NA ACTIVE NOT RECRUITING
(Aug 1, 2026)
PHASE2
A Study of Nipocalimab or Intravenous Immunoglobulin (IVIG) in Pregnancies At Risk of Fetal and Neonatal Alloimmune Thrombocytopenia (FNAIT) Janssen Research & Development, LLC NA RECRUITING
(Aug 1, 2026)
PHASE3
Tocilizumab Discontinuation Versus Dose Reduction for Patients With Well-Controlled Giant Cell Arteritis National Institute of Allergy and Infectious Diseases (NIAID) NA RECRUITING
(Aug 1, 2026)
PHASE2
A Phase 1b Study of HC-7366, an Agonist of ISR With Immunotherapy in Kidney Cancer (SHARK) M.D. Anderson Cancer Center NA RECRUITING
(Aug 1, 2026)
PHASE1
A Study of VV-14305 for the Treatment of Thyroid Eye Disease Kriya Therapeutics, Inc. NA RECRUITING
(Aug 1, 2026)
PHASE1, PHASE2
Efficacy of Bimekizumab in Adults With Pyoderma Gangrenosum Oregon Health and Science University NA NOT YET RECRUITING
(Aug 1, 2026)
PHASE2
Administration of Anti-CD19-chimeric-antigen-receptor-transduced T Cells From the Original Transplant Donor to Patients With Recurrent or Persistent B-cell Malignancies After Allogeneic Stem Cell Transplantation National Cancer Institute (NCI) NA COMPLETED
(Jul 8, 2026)
PHASE1
The Assessment of Prednisone In Remission Trial - Centers of Excellence Approach University of Pennsylvania NA COMPLETED
(Jul 1, 2026)
PHASE3
Role of Gut Microbiome and Fecal Transplant on Medication-Induced GI Complications in Patients With Cancer M.D. Anderson Cancer Center NA RECRUITING
(Jul 1, 2026)
PHASE1
Phase 1/2 Clinical Trial of LY3884963 in Patients With Frontotemporal Dementia With Progranulin Mutations (FTD-GRN) Prevail Therapeutics NA ACTIVE NOT RECRUITING
(Jul 1, 2026)
PHASE1, PHASE2
Infliximab and Intravenous Immunoglobulin Therapy in Treating Patients With Steroid-Refractory Pneumonitis ECOG-ACRIN Cancer Research Group NA TERMINATED
(Jul 1, 2026)
PHASE2
Ruxolitinib vs Prednisone as First-line Therapy for cGVHD Needing Systemic Therapy H. Lee Moffitt Cancer Center and Research Institute NA RECRUITING
(Jul 1, 2026)
PHASE2
Integrated Therapies for Alcohol Use in Alcohol-associated Liver Disease (ITAALD) Trial Samer Gawrieh NA RECRUITING
(Jul 1, 2026)
PHASE2
Study of LFD-200 in Healthy Adults and Adults With Moderate to Severe Rheumatoid Arthritis Lifordi Immunotherapeutics, Inc. NA RECRUITING
(Jul 1, 2026)
PHASE1
Cemiplimab for Kidney Transplant Recipients With Advanced Cutaneous Squamous Cell Carcinoma Washington University School of Medicine NA NOT YET RECRUITING
(Jul 1, 2026)
PHASE2
Study of the ITK Inhibitor Soquelitinib to Reduce Lymphoproliferation and Improve Cytopenias in Autoimmune Lymphoproliferative Syndrome (ALPS)-FAS Patients National Institute of Allergy and Infectious Diseases (NIAID) NA RECRUITING
(Jun 9, 2026)
PHASE2
A Phase II Study of Durvalumab Treatment - Substudy A: In Patients Who Discontinued Prior Checkpoint Therapy Due to Immune Related Toxicity - Substudy B: For Continued Treatment (+/- Tremelimumab) of Patients Previously Enrolled to Completed CCTG Studies Canadian Cancer Trials Group NA RECRUITING
(Jun 1, 2026)
PHASE2
Eosinophil-driven Corticotherapy for Patients Hospitalized for COPD Exacerbation University Hospital, Montpellier NA TERMINATED
(Jun 1, 2026)
PHASE3
Phase III Study of Efficacy and Safety of Secukinumab Versus Placebo, in Combination With Glucocorticoid Taper Regimen, in Patients With Polymyalgia Rheumatica (PMR) Novartis Pharmaceuticals NA COMPLETED
(Jun 1, 2026)
PHASE3
Orelabrutinib in the Treatment of Relapsed/Refractory AIHA Peking Union Medical College Hospital NA RECRUITING
(Jun 1, 2026)
PHASE2
A Study of E6742 in Participants With Systemic Lupus Erythematosus Eisai Co., Ltd. NA RECRUITING
(Jun 1, 2026)
PHASE2
Sirolimus in Patients With Systemic Lupus Erythematosus-Associated Immune Thrombocytopenia Chinese SLE Treatment And Research Group NA RECRUITING
(Jun 1, 2026)
PHASE2, PHASE3
Interest of Oral Corticosteroids in the Treatment of Chronic Subdural Hematomas University Hospital, Montpellier NA TERMINATED
(May 1, 2026)
PHASE3
Abatacept to Treat Steroid Refractory Chronic Graft Versus Host Disease (cGVHD) Beth Israel Deaconess Medical Center NA COMPLETED
(May 1, 2026)
PHASE1, PHASE2
Pediatric GVHD Low Risk Steroid Taper Trial John Levine NA COMPLETED
(May 1, 2026)
PHASE2
A Phase 1/2a Study of DB-2304 in Healthy Adults and SLE/CLE Participants DualityBio Inc. NA RECRUITING
(May 1, 2026)
PHASE1, PHASE2
A Study of IMM0306 in IgG4-Related Disease ImmuneOnco Biopharmaceuticals (Shanghai) Inc. NA NOT YET RECRUITING
(May 1, 2026)
PHASE2, PHASE3
Allogeneic Regulatory Dendritic Cell (DCreg) Renal Study Angus W. Thomson PhD DSc NA ACTIVE NOT RECRUITING
(Apr 1, 2026)
PHASE1
A Multi-Center Trial of Androgen Suppression With Abiraterone Acetate, Leuprolide, PARP Inhibition and Stereotactic Body Radiotherapy in Prostate Cancer University of Michigan Rogel Cancer Center NA ACTIVE NOT RECRUITING
(Apr 1, 2026)
PHASE1, PHASE2
Interfant-21 Treatment Protocol for Infants Under 1 Year With KMT2A-rearranged ALL or Mixed Phenotype Acute Leukemia Princess Maxima Center for Pediatric Oncology NA RECRUITING
(Apr 1, 2026)
PHASE3
Belimumab in Autoimmune Hepatitis University Health Network, Toronto NA RECRUITING
(Apr 1, 2026)
PHASE2
Randomized Controlled Multicenter Study Comparing Steroid Therapy Plus Anticoagulants to Steroid Therapy Alone in Deep Venous Thrombosis of Behçet's Syndrome Assistance Publique - Hôpitaux de Paris NA RECRUITING
(Apr 1, 2026)
PHASE3
SFRT+Sequential Hypofractionated/Conventional Fractionated RT+Iparomlimab and Tuvonralimab for Relapsed/Refractory Solid Tumors Second Affiliated Hospital of Nanchang University NA RECRUITING
(Apr 1, 2026)
PHASE2
Safety and Efficacy of ULSC on Disease Severity and Steroid Tapering in Participants With Dermatomyositis/ Polymyositis (DM/PM), Also Known as Idiopathic Inflammatory Myopathy (IIM) Restem, LLC. NA RECRUITING
(Apr 1, 2026)
PHASE2, PHASE3
Use of Acthar in Patients With FSGS That Will be Undergoing Renal Transplantation University of Colorado, Denver NA COMPLETED
(Mar 1, 2026)
PHASE3
A Study to Evaluate Intravitreal JNJ-81201887 (AAVCAGsCD59) Compared to Sham Procedure for the Treatment of Geographic Atrophy (GA) Secondary to Age-related Macular Degeneration (AMD) Janssen Research & Development, LLC NA COMPLETED
(Mar 1, 2026)
PHASE2
A Pilot Study of Liver Protection Using Prednisone for Patients Receiving Stereotactic Body Radiation Therapy for Hepatocellular Carcinoma University of Michigan Rogel Cancer Center NA RECRUITING
(Mar 1, 2026)
PHASE2
Subcutaneous Abatacept in Renal Transplant Recipients Idelberto Badell NA COMPLETED
(Mar 1, 2026)
PHASE1
Guselkumab in the Treatment of Adults With Pyoderma Gangrenosum (PG) Oregon Health and Science University NA RECRUITING
(Mar 1, 2026)
PHASE2
Study of Umbilical Cord Mesenchymal Stem Cell-Derived Exosomes in Vitiligo Xijing Hospital NA NOT YET RECRUITING
(Mar 1, 2026)
PHASE1, PHASE2




Generic Launch

Generic Release Date:

Rayos's generic launch date based on the last expiry date of its patents and exclusivities combined is estimated to be Jan 07, 2028 (This date is subject to change depending upon the patent filing activities by the drug owner or exclusivity additions to its drug application)

Rayos Generic API suppliers:

Prednisone is the generic name for the brand Rayos. 60 different companies have already filed for the generic of Rayos, with Hikma having the maximum number of approved applications. Check out the entire list of companies who have already received approval for Rayos's generic

How can I launch a generic of Rayos before its drug patent expiration? :

You can seek FDA approval to launch a generic drug before the expiration of Rayos's patents related by providing a 'paragraph IV certification' in your application, which states that the patent submitted by the Rayos's sponsor is invalid, unenforceable, or will not be infringed by your generic product.

Given below are the details of the already filed Para IV certificates on Rayos -

Strength Submission Date Expiration Date of Last Qualifying Patent 180-Day Status First Applicant Approval Generic Competition Status
25 mg / 5 mL
🔒 Unlock
26 Nov, 2012 23 Apr, 2024 Extinguished Deferred 25 Apr, 2017 Less
25 mg / 5 mL
🔒 Unlock
26 Nov, 2012 07 Jan, 2028 Non-Forfeiture Deferred 25 Apr, 2017 Less






About Rayos

Rayos is a drug owned by Horizon Therapeutics Usa Inc. It is used for managing a variety of inflammatory and autoimmune conditions including rheumatoid arthritis and allergic reactions. Rayos uses Prednisone as an active ingredient. Rayos was launched by Horizon in 2012.

Approval Date:

Rayos was approved by FDA for market use on 26 July, 2012.

Active Ingredient:

Rayos uses Prednisone as the active ingredient. Check out other Drugs and Companies using Prednisone ingredient

Treatment:

Rayos is used for managing a variety of inflammatory and autoimmune conditions including rheumatoid arthritis and allergic reactions.

Dosage:

Rayos is available in tablet, delayed release form for oral use. Given below is detailed information on Dosage -

Strength Dosage Form Availability Application Pathway
5MG TABLET, DELAYED RELEASE Discontinued ORAL
1MG TABLET, DELAYED RELEASE Discontinued ORAL
2MG TABLET, DELAYED RELEASE Discontinued ORAL