In a move that will help thwart attempts by foreign MNCs and individuals to get patents and trademark on ancient yoga techniques, the Government has shortlisted over 1,500 asanas and videographed over 250, classifying them as “traditional knowledge” of the country.The initiative will be a part of the Traditional Knowledge Digital library (TKDl), a unit of Council for Scientific and Industrial Research (CSIR) of the Ministry of Science and Technology, which challenges claims made at several patent offices across the globe by individuals and MNCs.