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TTABVUE. Trademark Trial and Appeal Board Inquiry System
v2.1

Summary

Query: Correspondence Name contains all words: JOHN F. SIEBERTH C/O ETHYL CORPORATION
Number of results: 2

Proceeding
Filing Date
Defendant(s),
Correspondent
Property(ies)
Plaintiff(s),
Correspondent
Property(ies)
91073633
02/24/1986
MPG INDUSTRIES, INC.
WALLENSTEIN WAGNER HATTIS STRAMPEL AND AUBEL
Mark: HY-TECH S#:73540904 R#:1430742
ETHYL PETROLEUM ADDITIVES, INC.
JOHN F. SIEBERTH C/O ETHYL CORPORATION
Mark: HITEC S#:72357813 R#:973766
91071242
03/28/1985
MALLINCKRODT, INC.
LYNDEN N. GOODWIN, ROY J. KLOSTERMANN & GRACE J. FISHEL
Mark: HYTECH S#:73414846 R#:1372077
ETHYL PETROLEUM ADDITIVES, INC.
JOHN F. SIEBERTH C/O ETHYL CORPORATION
Mark: HITEC S#:72357813 R#:973766

Results as of 04/22/2021 05:10 PMSearch again
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