WASHINGTON, June 29 (Reuters) - Canada's Department of Justice has concluded that Microsoft's (MSFT.O) deal to buy "Call of Duty" maker Activision Blizzard (ATVI.O) "is likely to" lead to less competition in some aspects of gaming, according to a court filing on Thursday. Microsoft has pressed for a decision in the court fight before the July 18 termination date for the deal. "We received notice from the Canada Competition Bureau that it would continue to monitor our acquisition of Activision Blizzard after the formal waiting period preventing the deal to close expired," a Microsoft spokesperson said. Microsoft's bid to acquire the "Call of Duty" videogame maker also faces opposition from British competition authorities. Microsoft's appeal to Britain's Competition Appeal Tribunal is scheduled for July 28.

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Persons: Microsoft's, Diane Bartz, Matthew Lewis Organizations: Canada's Department of Justice, Activision, Microsoft's, U.S . Federal Trade Commission, FTC, Microsoft, Canada Competition Bureau, Activision Blizzard, Thomson Locations: Canada, U.S, British, Washington