However, patent holders may also have an interest in donating technologies to public institutions, and especially to such institutions working in developing countries. Providing so-called humanitarian licenses may give the patent holder public-relations value and in some countries they may obtain significant tax benefits as well. Humanitarian licenses that may appear to contain only advantages for the recipient, may also have to be scrutinised in detail for longer-term liabilities for the recipient. There are however institutions, such as the Generation Challenge Programme, which has standardised its policy in humanitarian licenses. The final link in the backpack provides a brief paper on humanitarian licenses for further reading.