EU Commission Spokesperson Margaritis Schinas said the commission wouldn't comment on the internal issues involving its member states. 

"The UK High Court decision on Article 50, we will not comment on any issues that pertain to the internal legal and constitutional order of our member states, as regards our own EU legal order I wish to remind you that the Article 50 procedure as set out in the treaty requires the consent of the European Parliament for any Article 50 agreement. On the first leg of your question, I think I believe that the telephone call tomorrow (between British Prime Minister Theresa May and EU Commission President Jean-Claude Juncker) has been agreed and if I'm not mistaken it was at the request of the British Prime Minister." EU Commission Spokesperson Margaritis Schinas said.