Patent Oppositions in chemical compounds with ring structures industry

Explore the competitive field of chemical compounds with ring structures where companies are constantly innovating to stay ahead. Discover the latest patent opposition trends, top companies filing and facing patent oppositions, and the most recent patents under dispute. Stay informed on patent activity in chemical compounds with ring structures technology and learn how to protect your intellectual property.

Explore the top companies that have filed the most patent oppositions in the technology industry.

Explore the top companies that have faced the most patent oppositions in the technology industry.

Explore the top law firms that have filed the most patent oppositions in the technology industry.

Patent challenges are becoming increasingly common in the chemical compounds with ring structures industry as companies work to protect their innovations in a highly competitive market. These legal battles can significantly impact the development and release of new technologies. Below is a list of the latest patents that have been opposed in the chemical compounds with ring structures industry, offering a snapshot of the ongoing struggles over intellectual property rights. For anyone involved in this industry, understanding these patent disputes is essential for navigating its future.

Last updated on: Oct 29, 2026
Patent NumberTitleApplicantOpposition DateOpposition Name
Fused Imidazole Derivative, Preparation Method Therefor, And Medical Use ThereofJIANGSU HENGRUI PHARMACEUTICALSOct 28, 2026JAMES POOLE
Thrb Receptor Agonist Compound And Preparation Method And Use ThereofTERNS PHARMACEUTICALSOct 26, 2026AWA DENMARK
Methods Of Schizophrenia TreatmentINTRA CELLULAR THERAPIESOct 23, 2026SANDOZ
Photochromic Composition, Photochromic Article, And EyeglassesHOYA LENS THAILANDSep 3, 2026SLINGSBY
Photochromic Composition, Photochromic Article, And GlassesHOYA LENS THAILANDSep 3, 2026SLINGSBY
Crystalline Solid Forms Of 6-Carboxy-2-(3,5-Dichlorophenyl)-Benzoxazole For Use As A MedicamentPFIZERSep 3, 2026HAMM&WITTKOPP PATENTANWÄLTE PARTMBB
Crystalline Solid Forms Of 6-Carboxy-2-(3,5-Dichlorophenyl)-Benzoxazole For Use As A MedicamentPFIZERSep 2, 2026DEVA HOLDING
Improved Method For Producing Antibody-Drug ConjugateDAIICHI SANKYOAug 25, 2026SANDOZ
Solid Forms And Formulations Of (S)-4-(8-Amino-3-(1-(But-2-Ynoyl)Pyrrolidin-2-Yl)Imidazo[1,5-A]Pyrazin-1-Yl)-N-(Pyridin-2-Yl)BenzamideACERTA PHARMAAug 11, 2026KRAUS & WEISERT
Crystal Forms Of 6-(Cyclopropanecarboxamido)-4-((2-Methoxy-3-(1-Methyl-1H-1,2,4-Triazol-3-Yl)Phenyl)Amino)-N-(Methyl-D3)Pyridazine-3-CarboxamideBRISTOL MYERS SQUIBBAug 11, 2026HAMPTON KNOWLES

To stay ahead in the competitive chemical compounds with ring structures industry, companies are constantly innovating. Here are the top patents facing oppositions in the chemical compounds with ring structures industry. Stay informed on the latest opposition trends and learn how to protect your intellectual property.

Last updated on: Oct 29, 2026
Patent NumberPublication DateTitleApplicantTotal Oppositions
Jan 16, 2019(+)-2-[1-(3-Ethoxy-4-Methoxyphenyl)-2-Methylsulfonylethyl]-4-Acetylaminoisoindoline-1,3-Dione: Methods Of Using And Compositions ThereofAMGEN EUROPE15
Jan 7, 2026Formulations Of EnzalutamideMEDIVATION PROSTATE THERAPEUTICS11
Aug 10, 2022High-Purity Quinoline Derivative And Method For Manufacturing SameEISAI R&D MANAGEMENT9
Dec 11, 2019Methods Of Treating Hepatic EncephalopathySALIX PHARMACEUTICALS9
Sep 10, 2025Method Of Synthesizing Thyroid Hormone Analogs And Polymorphs ThereofMADRIGAL PHARMACEUTICALS8
Jul 3, 2024Novel Pharmaceutical CompositionNOVARTIS7
Apr 14, 2021Salts Or Co-Crystals Of 3-(3-Dimethylamino-1-Ethyl-2-Methyl-Propyl)-PhenolGRNENTHAL7
Nov 13, 2019Amorphous Lercanidipine HydrochlorideRECORDATI IRELAND7
Sep 1, 2021Direct Compression Formulation And ProcessNOVARTIS6
Apr 9, 2025Manufacture Of A Crystalline Pharmaceutical ProductORION6