1. Restrain innovation and progress: Too strict intellectual property protection hinders innovation and technological progress. When intellectual property protection is too strong, innovators face higher barriers, which limits others from using existing knowledge and technology to innovate.
2. Monopoly and monopoly pricing: Strict protection of intellectual property rights will lead to monopoly, price manipulation and market competition of intellectual property rights holders. It will lead to an increase in the prices of products and services and limit consumers' choices.
3. Hinder the development of developing countries: Strict intellectual property protection is a burden for developing countries. Intellectual property protection needs to pay high patent fees and technology transfer fees, which will limit the ability of developing countries to acquire advanced technology and knowledge.
4. Restrict public interests and social welfare: Excessive protection of intellectual property rights restricts the public's access to important resources and technologies, thus limiting the realization of public interests and social welfare. For example, in the medical field, strict patent protection will lead to high drug prices and limit patients' choice of drugs. Therefore, the disadvantages of strict intellectual property rights have the above four aspects. It should be pointed out that moderate intellectual property protection is still necessary to encourage innovation and promote knowledge sharing. The original intention of intellectual property system is to protect the rights and interests of knowledge creators and encourage them to innovate and invest. Therefore, it is necessary to seek a balance between intellectual property protection and public interests and formulate reasonable policies to balance the rights and interests of all parties.