BAYER AKTIENGESELLSCHAFT
1,459 Marks
AG
First Filed:Jul 12, 1920Latest Filed:Mar 5, 2026Address:Kaiser-Wilhelm-Allee, Leverkusen, 51373, DE
Portfolio Overview
Registered
234(16%)Pending
68(5%)Dead
1,157(79%)Previous
259Top Classes
Class 5
PharmaceuticalsClass 1
Industrial Chemicals & AdhesivesClass 9
Electronics, Software & Scientific EquipmentTTAB Proceedings
Total Proceedings
243As Plaintiff
148(61%)As Defendant
95(39%)Top Firms
Connolly Bove Lodge & Hutz L...(Dec 2011)
361
BAYER CORPORATION(Aug 2020)
358
PATTISHALL, MCAULIFFE, NEWBU...(Dec 2025)
290
Lowenstein Sandler LLP(Mar 2022)
143
DYKEMA GOSSETT PLLC(Nov 2011)
50
Trademark Activity Timeline(1980 – 2026)
Trademark Portfolio
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