In December 2015 Ecojustice filed an official complaint against the Calgary-based non-profit advocacy organization group—the Friends of Science (FoS), the International Climate Science Coalition, and the Heartland Institute—under the Competition Act with the Competition Bureau of Canada on behalf of Stephen Lewis, Tzeporah Berman Thomas Duck, David Schindler, Danny Harvey and two others, in which they called for a criminal investigation. The Advertising Standards Canada (now Ad Standards) had ruled the Friends of Science ads—which appeared prior to the 2015 United Nations Climate Change Conference (COP21) talks, held in Paris from November 30 to December 12—with messages of "overzealous" climate policies paid for by Canadian "taxpayers' money". By December, in spite of the ruling, FoS has placed billboards in major Canadian cities with messages such as "The sun is the main driver of climate change. Not you." According to Charles Hatt, an Ecojustice lawyer, "The Competition Act makes it an offence to knowingly or recklessly make a false or misleading representation for promotion of business interests. This is an attack on science." According to a December 8, 2015 article in Ecojustice's "Now Magazine", the Friends of Science's funding sources were unknown. Although Talisman Energy, had donated $175,000 to FoS in 2004 under Talisman's previous president, by 2015, the new president no longer shared FoS views on climate change. The Competition Bureau notified Ecojustice lawyer, Charles Hatt, in a June 29, 2017 letter, that the inquiry concerning "allegations that Friends of Science Society, International Climate Science Coalition and Heartland Institute made misleading representations regarding climate change on their respective websites and, in the case of Friends of Science Society, on billboards" had been discontinued.