petethegeek:
It appears that, whilst Sharpie® enjoys full trademark protection, Dumpster® is now regarded as a 'genericized trademark' - http://en.wikipedia.org/wiki/DumpsterJoeN:
Sharpie® is a trademark. By definition, all Sharpie®s are name-brand.http://www.sharpie.com/enMY/SharpieInfo/Pages/Trademark.aspx
Gotta go now, taking trash out to the Dumpster®...
(I'm not sure why, but I'm still a little bit startled by the fact that there exists such a comprehensive wiki entry on Dumpsters.)
Not to beat a dead horse, oh, ok, maybe to beat it a little, but it looks the the owner of Dumpster® trademark the has kept it renewed at least:
http://tsdr.uspto.gov/#caseNumber=72137327&caseType=SERIAL_NO&searchType=statusSearch
So I guess it is still a trademark. Not to say that maybe in certain ways it is genericized too. Maybe there is grey area there. IANAL.