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Routine Notice Added Final

Pyrrol-2-one therapeutic compound for bacterial respiratory infection

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Published March 25th, 2026
Detected April 1st, 2026
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Summary

The European Patent Office published patent application EP3487494A1 for Unilever IP Holdings B.V. and Unilever Global IP Limited, covering 4-(4-chlorophenyl)-5-methylene-pyrrol-2-one and 5-methylene-4-(p-tolyl)pyrrol-2-one compounds for treating bacterial respiratory tract infections. The patent application was filed with claims under IPC classifications A61K 31/4015 and A61P 31/00.

What changed

The EPO published international patent application EP3487494A1 claiming 4-(4-chlorophenyl)-5-methylene-pyrrol-2-one or 5-methylene-4-(p-tolyl)pyrrol-2-one for use in treating bacterial respiratory tract infections. The application names inventors Neil James Parry, Paolo Pantalone, and Paul Williams, with designated states covering all EU member states plus associated countries (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).

This is a routine patent publication providing public notice of the application's existence and contents. No compliance actions are required from third parties. Competitors developing similar compounds for bacterial respiratory infections should review the patent claims for potential infringement risks or consider filing observations during the examination phase.

Source document (simplified)

← EPO Patent Bulletin

4-(4-CHLOROPHENYL)-5-METHYLENE-PYRROL-2-ONE OR 5-METHYLENE-4-(P-TOLYL)PYRROL-2-ONE FOR USE IN THE TREATMENT OF BACTERIAL RESPIRATORY TRACT INFECTION

Publication EP3487494A1 Kind: A1 Mar 25, 2026

Applicants

Unilever IP Holdings B.V., Unilever Global IP Limited

Inventors

PARRY, Neil James, PANTALONE, Paolo, WILLIAMS, Paul

IPC Classifications

A61K 31/4015 20060101AFI20180126BHEP A61P 31/00 20060101ALI20180126BHEP A61K 31/402 20060101ALI20180126BHEP A61K 31/40 20060101ALI20180126BHEP

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 →

Classification

Agency
EPO
Published
March 25th, 2026
Instrument
Notice
Legal weight
Non-binding
Stage
Final
Change scope
Minor
Document ID
EP3487494A1

Who this affects

Applies to
Pharmaceutical companies
Industry sector
3254 Pharmaceutical Manufacturing
Activity scope
Pharmaceutical Patent Filing
Geographic scope
European Union EU

Taxonomy

Primary area
Pharmaceuticals
Operational domain
Legal
Topics
Healthcare Consumer Protection

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