Patents have been filed abroad for making basic Indian dishes and food ingredients such as "khoya", "dal" and "dosa" posing a threat to the traditional knowledge and expertise of women at New Delhi , warns a leading food rights activist. Participating in a round-table discussion at New Delhi today on "Economic empowerment of Women", organised by Women's Political Watch and Unifem, food rights activist Vandana Shiva said patenting of traditional knowledge and globalisation of agriculture posed a threat to Indian farmers, particularly the women.