Changes

'''Elimination of Competition''': Opponents criticize patent pools for the potential of anti-competitive behavior and collusion, primarily with regards to substitute patents. Substitute or non-essential patents cover competing technologies that can be developed in parallel without risk of infringement [http://www.wipo.int/export/sites/www/ip-competition/en/studies/patent_pools_report.pdf]. Patent pools formed between companies holding substitute patents eliminate competition in that particular technological sector. The [http://www.wipo.int/export/sites/www/ip-competition/en/studies/patent_pools_report.pdf|World Intellectual Property Organization] refers to patent pools exhibiting this behavior as cartels. Certain patent pools have been found to share competetitively sensitive information such as marketing and pricing strategies and R&D findings.[http://www.wipo.int/export/sites/www/ip-competition/en/studies/patent_pools_report.pdf] For example, R&D information and developments could be shared in grant-back provisions, a possible requirement in patent pool that where companies share new or downstream technologies and innovations with members of the pool without additional fees.

'''Licensing Practices''': If a patent pool restricts its members from licensing its patents independently, it lowers the incentive to produce alternatives and inflates the costs of goods or technology for consumers. The Department of Justice and Federal Trade Commission state stated that patent pools may create barriers to entry for new firms since the required restrictions on licensing may create "a barrier to entry if existing relationships make it harder for 'new firms to come in and overcome the patent thicket'." patents will be inaccessible [http://www.justice.gov/sites/default/files/atr/legacy/2007/07/11/222655.pdf (DOJ)] Additionally, downstream products or firms may unknowingly use technology protected by a patent pool. An article published by the [http://www.nber.org/chapters/c10778.pdf|NBER] claims that these companies may then be burdened by cumulative taxes and a time holdup in production.