Impala won a 2006 court ruling overturning the European Union's approval of Sony and Bertelsmann's agreement to form the Sony BMG record label. Impala has said it expects an outright rejection of Universal's EMI deal.
Universal Music hasn't been given any indication that either regulatory group will reject the deal, a person close to the process said.
Vivendi spokesman Simon Gillham said Vivendi and Universal "continue to follow the regulatory course and are confident that their arguments will be heard".
Warner spokesman Will Tanous declined to comment.
Blavatnik has said that the acquisition of EMI would enable Universal Music to squash competition, but Vivendi chief executive Jean-Bernard Levy says the deal would ultimately be good for the industry and musicians.
Universal's holdings account for 27 per cent of the recorded music market, and EMI has 9.7 per cent, says Sanford C. Bernstein analyst Claudio Aspesi. Warner Music has 12 per cent.
Blavatnik might try to force as many regulatory concessions as possible, pushing Vivendi to abandon the acquisition even without a formal rejection, two people said.
The European Commission has set an initial deadline of March 23 to rule on the EMI deal.
- Bloomberg