The styling of brand names depends on whether they are trademarked. Always check the dictionary, which lists many brand names.
Trademarked brand names are capitalized but not italicized:
Note, however, that the dictionary may specify that a trademarked brand name, like Xerox, is lowercased when used as a verb:
I xeroxed the report for my supervisor.
When the dictionary indicates that a brand name (e.g., Dumpster, Windbreaker) has entered the language as a common noun, it is styled lowercase without italics:
We discarded the items in the dumpster.
When traveling to Chicago, I always pack a windbreaker.
Published 10 November 2020