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: Feb 19, 2026
Patent NumberTitleApplicantOpposition DateOpposition Name
Manufacture Of A Crystalline Pharmaceutical ProductORIONJan 9, 2026ADALVO
Manufacture Of A Crystalline Pharmaceutical ProductORIONJan 8, 2026KRAUS & LEDERER PARTGMBB
Salt Of A Pyrimido[6,1-A]Isoquinolin-4-One CompoundVERONA PHARMADec 19, 2025KELTIE
Polymorphs And Solid Forms Of (S)-2-((2-((S)-4-(Difluoromethyl)-2-Oxooxazolidin-3-Yl)-5,6-Dihydrobenzo[F]Imidazo[1,2-D][1,4]Oxazepin-9-Yl)Amino)Propanamide, And Methods Of ProductionF HOFFMANN LA ROCHEDec 19, 2025BOTTI & FERRARI
Thyroid Hormone Receptor Agonists And Uses ThereofSICHUAN HAISCO PHARMACEUTICALDec 19, 2025ELKINGTON AND FIFE
Compound For Organic Electric Device, Organic Electric Device Using Same, And Electronic Device ThereofDUK SAN NEOLUXDec 19, 2025LENOVO DEUTSCHLAND
Compound For Organic Electric Device, Organic Electric Device Using Same, And Electronic Device ThereofDUK SAN NEOLUXDec 18, 2025JILIN OLED OPTICAL AND ELECTRONIC MATERIALS
Salt Of A Pyrimido[6,1-A]Isoquinolin-4-One CompoundVERONA PHARMADec 17, 2025BARDEHLE PAGENBERG
Sodium (2R, 5S, 13Ar) -7, 9-Dioxo-10- ( (2,4,6-Trifluorobenzyl) Carbamoyl) -2, 3, 4, 5, 7, 9, 13, 13A-Octahydro-2, 5-Methanopyrido [1',2' : 4.5] Pyrazino [2, 1-B] Oxazepin-8-OlateGILEAD SCIENCESSep 4, 2025BRAND MURRAY FULLER
Herbicide And Production Method For Intermediate ThereofKUMIAI CHEMICAL INDUSTRYSep 4, 2025ADAMA AGRICULTURAL SOLUTIONS

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: Feb 19, 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 ThereofCELGENE15
Aug 18, 2021Formulations Of EnzalutamideASTELLAS PHARMA12
Aug 10, 2022High-Purity Quinoline Derivative And Method For Manufacturing SameEISAI R&D MANAGEMENT10
Dec 11, 2019Methods Of Treating Hepatic EncephalopathySALIX PHARMACEUTICALS8
Jul 3, 2024Novel Pharmaceutical CompositionNOVARTIS8
Nov 13, 2019Amorphous Lercanidipine HydrochlorideRECORDATI IRELAND7
Apr 14, 2021Salts Or Co-Crystals Of 3-(3-Dimethylamino-1-Ethyl-2-Methyl-Propyl)-PhenolGRNENTHAL7
Sep 1, 2021Direct Compression Formulation And ProcessNOVARTIS7
Mar 14, 2018Crystalline Form Of Abacavir That Is Essentially Free Of SolventESTEVE QUMICA6
Dec 19, 2018Polymorphic Forms Of 3-(4-Amino-1-Oxo-1,3 Dihydroisoindol-2-Yl)-Piperidine-2,6-DioneCELGENE6