The Blues maintained their four-point lead over second-placed Southampton thanks to a 2-1 victory over Liverpool at Anfield on Saturday.
But Chelsea manager Mourinho played down his side’s hopes of going the season unbeaten, adding that there are five clubs capable of winning the title.
“I think we have a very good chance to win the title but I think we, Arsenal, Manchester City, Manchester United and Southampton are all still in the race,” said Mourinho.
“All we can say is that we are the champions of autumn.”
Mourinho added that Chelsea are enjoying a new era after the arrivals of Diego Costa, Filipe Luis and Cesc Fabregas this summer.
“I was on the bench in the second half and for me it did not look the normal pressure you feel at Anfield because my team is fantastic,” Mourinho said.
“I thought Liverpool tried everything, they did well, but Chelsea was the best team. My previous team started winning in 2004-05 and the same team won year after year, trophies after trophies.
“This is a new team, a new era for Chelsea. We are obviously happy with the squad and the quality of football but no team gets into history without trophies and, at the moment, this team has no trophies.”
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