FILE PHOTO: A Microsoft logo is seen in Los Angeles, California U.S. November 7, 2017. REUTERS/Lucy Nicholson/File Photo/File Photo
(Reuters) - EU's antitrust regulator is taking a deeper look into Microsoft Corp's $16 billion deal for transcription technology company Nuance Communications Inc, asking customers and competitors to draw up a list of concerns, according to a questionnaire from last month seen by Reuters.
The previously unreported outreach is the most extensive by an antitrust authority since the companies announced the acquisition in April, according to a person familiar with the matter.
