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.

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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 30, 2025
Patent NumberTitleApplicantOpposition DateOpposition Name

Get alerts on new patent oppositions in the chemical compounds with ring structures industry

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, 2025ELKINGTON AND FIFE
Herbicide And Production Method For Intermediate ThereofKUMIAI CHEMICAL INDUSTRYSep 4, 2025KENSO AGCARE
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 3, 2025SANDOZ
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 2, 2025HAMM & WITTKOPP
Preparation Containing Tetracyclic Compound At High DoseCHUGAI SEIYAKU KABUSHIKI KAISHAAug 20, 2025ELKINGTON AND FIFE
Preparation Containing Tetracyclic Compound At High DoseCHUGAI SEIYAKU KABUSHIKI KAISHAAug 19, 2025TEVA PHARMACEUTICALS
Processes For Preparing Jak Inhibitors And Related Intermediate CompoundsINCYTEAug 12, 2025HAMM & WITTKOPP
Novel Lipids And Compositions For The Delivery Of TherapeuticsARBUTUS BIOPHARMAJul 23, 2025MERCK SHARP & DOHME UK
Process For Preparing High Purity Degree LarotrectinibOLONJul 16, 2025SCORPIO
Use Of Riluzole Prodrugs To Treat AtaxiasBIOHAVEN PHARMACEUTICAL HOLDINGJul 2, 2025KRAUS & LEDERER PARTGMBB

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 30, 2025
Patent NumberGrant 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
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