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Appendix and Companies

In response to a request for information from Congress, and on the basis of public comments, the USPTO compiled the following non-exhaustive list of companies that have developed, are proposing to develop, or offering technological protection systems (including components thereof) for digital media embodying copyrighted works and prevent infringement. The information in this list is intended for the use of Congress. The USPTO has not conducted an independent analysis of these companies and makes no recommendations, comparisons, or comparative assessments of their products or services.