Taylor was also confronted by Roma fans at Budapest Airport after refereeing in the Europa League final.
Subsequent video footage of Taylor being attacked by angry fans at the airport was condemned by the Premier League, which said it was “shocked and appalled” by the official’s abuse.
Mourinho’s charge of using abusive/abusive language towards the match referee is one of a number of allegations leveled against both clubs following a stormy final that saw 13 yellow cards.
Mourinho criticized Taylor in his post-match press conference and in a video that later surfaced on social media, the former Chelsea and Manchester United manager can be seen gesturing at Taylor and officials in the stadium car park and can be heard saying “shame”.
In the incident at the airport, clips on Twitter show a chair and drinks being thrown towards Taylor and his group as they walk through a gathering of Roma fans.
A Premier League spokesman said: “We are shocked and appalled at the unacceptable abuse directed at Anthony Taylor and his family as they were returning from the UEFA Europa League final.
“No one should have to suffer the inexcusable behavior they had to endure yesterday.
“Anthony is one of our most experienced and accomplished referees and we fully support him and his family.”
The Professional Game Match Officials Limited (PGMOL) said in a statement on Thursday evening: “PGMOL is aware of videos circulating on social media showing Anthony Taylor and his family being harassed and abused at Budapest Airport.
“We are appalled at the unjustified and abhorrent abuse directed at Anthony and his family as they try to get home from the UEFA Europa League referee final.
“We will continue to provide our full support to Anthony and his family.”
Taylor accounted for Mourinho during a game that ended 1-1 after extra time before Sevilla sealed their seventh Europa League triumph with a 4-1 penalty shootout win.
The game was riddled with delays, with a total of 25 minutes of stoppages added to the 120 minutes of playing time.
UEFA also accused both clubs of throwing objects, lighting fireworks and inappropriate team behaviour. In addition, Roma were charged with crowd disturbance and vandalism.
West Ham boss David Moyes has condemned the treatment of Taylor as he prepares for Wednesday’s Europa League final against Fiorentina Prague.
“I didn’t see the game so I can’t comment on the game itself or the management,” Moyes said.
“All referees have a really difficult job and they shouldn’t be put in any difficult situations that I heard about this morning.” That’s not right.”