1, background: the level of technological innovation of enterprises and policy support. The target country's high level of technological research and development of enterprises, the government has also introduced policies to encourage technological innovation, which requires the market to strengthen the protection of their own technological achievements, set up patent barriers to prevent the entry of foreign similar products.
2. Purpose: to protect the domestic industry and obtain excessive profits. Setting up patent barriers can be in a certain period of time so that the existence of similar products in the country's technology monopoly, to protect the development of domestic industry, and at the same time can be technological advantage to obtain excessive profits. This is also the target country government for the purpose of national industrial policy and support.
3. Significance: actually trade protectionist measures. Ostensibly for the protection of intellectual property rights, in fact, the setting of excessive or abusive use of patent barriers means also belong to trade protectionism, invariably impede the fair competition of other countries' products, affecting the globalization of the trade situation, and is not conducive to long-term economic development.