Sunrise Senior Living Real Estate Investment Trust said it plans to appeal a court decision that forced Health Care Property Investors Inc. to withdraw its $1.2 billion bid for the Canadian REIT.

The appeal comes after a decision late last week from the Ontario Superior Court of Justice that the Long Beach REIT must withdraw its bid due to a binding agreement the Canadian firm already had with Louisville-based Ventas Inc.

Health Care Property Investors, the largest U.S. owner of real estate for health-care providers, said it was prepared to reach an agreement worth about 20 percent more than the Ventas deal. The judge had ruled Sunrise could not continue negotiations with the Long Beach REIT because Ventas and Sunrise had signed a memorandum of understanding in January.

Sunrise said it plans to file the appeal Monday and has asked for an expedited decision.

Shares in Health Care Property Investors were up 8 cents to $37.92 in afternoon trading Monday on the New York Stock Exchange.