Opposition Filed Opposition filed by KSB SE & Co. KGaA EP Register Verified

METHOD FOR MONITORING AND CONTROLLING THE OPERATION OF A MIXER

Publication No. EP4155274

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App No. EP21199379

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Filed by Xylem Europe GmbH

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Filed on 2021-09-28

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Issued/Published on 2026-01-28

Official EPO Register

Publication No. EP4155274 A1

Application No. EP21199379 Filed: 2021-09-28

Grant Date 2026-01-28 Mention of grant

Active Oppositions 1 Active EPO Oppositions

Patent Abstract / Summary

Patent abstract is being processed or was not provided in English by the publishing office.

IPC Classifications

C02F3/12, B01F35/33, // B01F27/25

Priority Claims

No priority claims recorded

Designated Contracting States (38 EPC States)

Albania (AL)

Austria (AT)

Belgium (BE)

Bulgaria (BG)

Switzerland (CH)

Cyprus (CY)

Czech Republic (CZ)

Germany (DE)

Denmark (DK)

Estonia (EE)

Spain (ES)

Finland (FI)

France (FR)

United Kingdom (GB)

Greece (GR)

Croatia (HR)

Hungary (HU)

Ireland (IE)

Iceland (IS)

Italy (IT)

Liechtenstein (LI)

Lithuania (LT)

Luxembourg (LU)

Latvia (LV)

Monaco (MC)

North Macedonia (MK)

Malta (MT)

Netherlands (NL)

Norway (NO)

Poland (PL)

Portugal (PT)

Romania (RO)

Serbia (RS)

Sweden (SE)

Slovenia (SI)

Slovakia (SK)

San Marino (SM)

Turkey (TR)

Parties & Representation

Applicants

Xylem Europe GmbH

Bleicheplatz 6, 8200 Schaffhausen

Inventors (1)

WESSMAN, Martin

169 40 SOLNA

Representatives / Agents

Brann AB

P.O. Box 3690, Sveavägen 63

Lorenz Seidler Gossel Part. mbB

Widenmayerstr. 23, 80538 München

Key Procedural Dates

Request-For-Examination 2023-09-25

Mention Of Grant Published 2026-01-28

First-Examination-Report-Despatched 2025-09-22

Patent Oppositions

Official opposition proceedings filed against European Patent EP4155274 under EPC Article 99.

1 ACTIVE OPPONENT

Opponent Company

KSB SE & Co. KGaA

Johann-Klein-Straße 9, DE

Representative

Lorenz Seidler Gossel Part. mbB

Filing Date

2026-10-28

Opposition in Progress

Patent & Non-Patent Citations

Cited documents and prior art referenced in search and examination reports.

4 Citations

Cited Patent Documents

EP3152442

Espacenet

US2015265979

Espacenet

US2017036183

Espacenet

US2005155922

Espacenet

Official File Inspection EPC Art. 128 Public Dossier

Complete European Patent Register Dossier (148 Total Documents)

The full inspection file for Application EP21199379 contains 148 total documents, including all notices of opposition, proprietor counter-statements, examination communications, third-party observations, and procedural forms. Below are all major recorded procedural filings and publication specifications.

Open 148-Doc Register Dossier

Dossier Filing

Date: 2025-12-20 Procedure: Grant EPIDOSNIGR3

Inspect on Register

METHOD FOR MONITORING AND CONTROLLING THE OPERATION OF A MIXER

Patent Abstract / Summary

IPC Classifications

Priority Claims

Designated Contracting States (38 EPC States)

Parties & Representation

Applicants

Inventors (1)

Representatives / Agents

Key Procedural Dates

Patent Oppositions

KSB SE & Co. KGaA

Legal Status & Event History

Patent & Non-Patent Citations

Cited Patent Documents

Worldwide Patent Family

Complete European Patent Register Dossier (148 Total Documents)

Recorded Filings & Patent Specifications

European Patent Specification - Granted Patent (B1)

Official European Patent Register Full Dossier

European Patent Application with Search Report (A1)

Lapse of the patent in a contracting state

Opposition filed

Lapse of the patent in a contracting state

Lapse of the patent in a contracting state

Lapse of the patent in a contracting state

Lapse of the patent in a contracting state

Lapse of the patent in a contracting state

(Expected) grant

New entry: Payment of fee for grant

New entry: Payment of fee for publishing/printing

New entry: Receipt of the translation of the claim(s)

New entry: Renewal fee paid

Renewal fee payment

Intention to grant the patent

New entry: Communication of intention to grant a patent

Change - classification

New entry: Renewal fee paid

Renewal fee payment

The date on which the examining division becomes responsible, has been established

Request for examination filed

Change - designated states

New entry: Renewal fee paid

Renewal fee payment

Amendment by applicant

Date on which the examining division has become responsible

Amendments

Publication in section I.1 EP Bulletin

Change - representative

Language of the procedure

International searching authority

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