The Brief

PHOENIX - The owners of a mobile coffee truck that operates at hospitals across the Valley say it is no longer welcome at the Mayo Clinic in Scottsdale because of its name and logo.

What we know:

Graveyard Shift Coffee , a family-owned business run by Michael Tremaine and his son, Tyler Tremaine, announced on social media that it was no longer allowed to serve coffee at Mayo Clinic, effective immediately.

The business has been operating for three and a half years, serving coffee to staff working late night hours at hospitals.

Tyler said they had been going to the Mayo Clinic on Mondays and Fridays from 9 p.m. to 1 a.m. for two years and had never received a complaint until now. He says they have lost 40% of their work as a result.

"We just received a call Monday afterno

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