"The only point I want to make is to confirm that the European Union institutions remain united and we stand by the agreement we have negotiated with the UK, never against the UK", he said in Brussels this morning.
The Irish Government has said the UK's Brexit Withdrawal Agreement is not open for re-negotiation.
Coveney said, however, that he welcomed the fact that MPs had voted in favour of an amendment that commits the government to avoiding a no-deal Brexit.
"The Withdrawal Agreement remains the best and only deal possible", Juncker told the European Parliament.
MPs voted that they would accept May's Brexit deal if she could secure changes to the Northern Ireland backstop.
But Junker also said he was an optimist and hence believed "there can and will be agreement with United Kingdom".
The EU has already rejected all three ideas.
Kids traveling from Washington develop measles in Hawaii
If one sick child coughs in a room and leaves, another unvaccinated person has a 90 percent chance of catching the illness. These exemptions have made OR and Washington "more susceptible to entirely preventable outbreaks", he told Vox .
The government in Dublin reiterated its stance that the ratification of the deal was the best way to ensure an orderly withdrawal of the United Kingdom from the EU.
Having backed Sir Graham Brady's amendment on Tuesday, the Conservative Party was accused of "ripping up" the Good Friday Agreement.
Karen Bradley, the Secretary of State for Northern Ireland.
It was signed in 1998, ending decades of violence in Northern Ireland, and allowed the removal of security checks along the Irish border.
Mrs May will now have to return to Brussels.
While the SNP's Angela Crawley (Lanark and Hamilton East) claimed the government was "pursuing a dead end policy by seeking to renegotiate on the backstop".
He added that a deal with no backstop would result in a hard border, "and we can not accept that as that will only roll back the progress we have made over the last 20 years".