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Ionis Pharmaceuticals - Conjugated Antisense Compounds Patent

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Published March 18th, 2026
Detected March 24th, 2026
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Summary

The European Patent Office has published patent application EP4711459A2 for Ionis Pharmaceuticals, detailing conjugated antisense compounds, specifically those conjugated to N-Acetylgalactosamine. This publication relates to advancements in oligonucleotide therapeutics and their potential applications.

What changed

This document is a patent publication from the European Patent Office (EPO) for Ionis Pharmaceuticals, titled "Conjugated antisense compounds and their use." The patent application, EP4711459A2, published on March 18, 2026, describes oligomeric compounds conjugated to N-Acetylgalactosamine, indicating potential advancements in oligonucleotide-based therapies.

While this is a patent publication and not a regulatory rule, it signifies a development in the intellectual property landscape for pharmaceutical companies. Compliance officers in the pharmaceutical sector should be aware of this patent as it may affect research, development, and commercialization strategies related to antisense oligonucleotide therapeutics. No immediate compliance actions are required, but it highlights areas of innovation and potential future patent disputes or licensing opportunities.

Source document (simplified)

← EPO Patent Bulletin

CONJUGATED ANTISENSE COMPOUNDS AND THEIR USE

Publication EP4711459A2 Kind: A2 Mar 18, 2026

Applicants

Ionis Pharmaceuticals, Inc.

Inventors

PRAKASH, Thazha P., SETH, Punit P., SWAYZE, Eric E.

Abstract

Provided herein are oligomeric compounds with conjugate groups. In certain embodiments, the oligomeric compounds are conjugated to N-Acetylgalactosamine.

IPC Classifications

C12N 15/113 20100101AFI20190816BHEP

Designated States

AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LI, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR

View original document →

Named provisions

Conjugated antisense compounds and their use

Source

Analysis generated by AI. Source diff and links are from the original.

Classification

Agency
EPO
Published
March 18th, 2026
Instrument
Notice
Legal weight
Non-binding
Stage
Final
Change scope
Minor
Document ID
EP4711459A2

Who this affects

Applies to
Drug manufacturers Pharmaceutical companies
Industry sector
3254 Pharmaceutical Manufacturing
Activity scope
Drug Development Intellectual Property Management
Geographic scope
European Union EU

Taxonomy

Primary area
Pharmaceuticals
Operational domain
Legal
Compliance frameworks
FDA 21 CFR Part 11 GxP
Topics
Intellectual Property Biotechnology

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