Industry Minister Christian Paradis said Wednesday that he is looking into whether the government should review Nortel Networks Corp.'s patent sale under the Investment Canada Act. Paradis' office issued a statement to media Wednesday that said the minister “has asked his officials to look into how the Investment Canada Act may apply to this transaction.” Last week, a group of six companies—EMC, Ericsson, Sony, Apple Inc., Microsoft, and RIM Ltd.—successfully bid $4.5 billion US for 6,000 Nortel patent and patent applications. RIM was the only Canadian company in the group, and it contributed $770 million US to the purchase. The Investment Canada Act states that the government reviews the purchase of a Canadian entity if the net value of the assets amount to more than $312 million in book value. The review would look at whether the sale is of a “net benefit” to Canada. Dow Jones Newswires reported Wednesday that the sale of the patents does not appear to meet the requirement for a review. The news service cited anonymous sources who said Nortel's book's valued the patent assets at zero. “The Act also calls for a review of assets that generate annual revenue of more than C$73 million, but Nortel's global patent portfolio never made more than C$10 million annually,” Dow Jones reported, citing sources familiar with the situation.