IP Verse

Steffan & Kiehne patent opposition analysis

The comprehensive analysis of Steffan & Kiehne opposition landscape, with a particular emphasis on intellectual property (IP) dynamics.

Stay updated with the latest patent oppositions filed by Steffan & Kiehne

Patent Number	Title	Applicant	Opposition Date	Opposition Company
EP3802915	Aqueous Dispersion For Activating A Metal Surface, And Method For The Phosphatisation Thereof	HENKEL	Aug 14, 2025	CHEMETALL
EP3612663	Method For Zinc Phosphating Metal Components In Series So As To Form Layers	HENKEL	Dec 4, 2024	CHEMETALL
EP3449035	System For Nickel-Free Zinc Phosphate Pretreatment	PPG INDUSTRIES OHIO	Nov 27, 2024	CHEMETALL
EP4065749	Resource-Saving Method For Activating A Metal Surface Prior To A Phosphatization Process	HENKEL	Oct 1, 2024	CHEMETALL
EP3368587	Non-Chromate Corrosion Inhibiting Polythioether Sealants	PRC DESOTO	May 7, 2024	CHEMETALL
EP3313915	Method For Activating And Precipitating Lignin	TEKNOLOGIAN TUTKIMUSKESKUS VTT	Aug 30, 2023	SUNCOAL INDUSTRIES
EP3649223	Cleaning Solution Comprising A Mix Of Polyoxyalkylene Nonionic Surfactants For Cleaning Metal Surfaces	ATOTECH DEUTSCHLAND	May 31, 2022	CHEMETALL
EP2234617	Dosing Regimen Associated With Long Acting Injectable Paliperidone Esters	JANSSEN PHARMACEUTICA	Dec 27, 2021	TOLMAR
EP3470457	Sulphur-Linkable Rubber Compound, Vulcanizate Of The Rubber Compound And Vehicle Tyres	CARL VON OSSIETZKY UNIVERSITT OLDENBURG	Oct 5, 2021	SUNCOAL INDUSTRIES KOEHLER PAPER
EP2971234	Method For Preparing And Treating A Steel Substrate	PPG INDUSTRIES OHIO	Sep 1, 2021	CHEMETALL

Top companies who are the clients of Steffan & Kiehne

Company	Total
CHEMETALL	11
BASF COATINGS	5
STEFFAN & KIEHNE PATENTANWALTE PARTG MBB	1
SUNCOAL INDUSTRIES	1
SUNCOAL INDUSTRIES KOEHLER PAPER	1
TOLMAR	1