Well, there is a thing called colormark, But as far as I know, color marks apply to companies from the same industry. T-Mobile and Lemonade are not in the same industry therefore, Lemonade should be able to use Magenta.
So as I said, unless you sub-divide the insurance industry on arbitrary lines, they are both selling insurance to the consumer. Claiming that because it is only "extended warranties" (which it isn't anyway) isn't really a legal argument for trademark law. We're talking about markets here, they're both in the insurance market regardless of how you frame it.
Does anyone know whether T-Mobile sell THEIR insurance or they act as brokers selling someone else's insurance (e.g. Allianz, AXA, etc.)?
I also wonder the % of revenue of T-Mobile from insurance Vs their other business lines.
(I don't really wonder)
T-Mobile does the same. So in that way they're no different than any other type of consumer insurance company.
In this case, if you can't buy phone insurance (the product you would buy from T-Mobile) from Lemonade, they are not competitors.
I mean we are actually discussing “T-Mobile isn’t a mobile carrier, they’re an insurance company”.