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Chapter 1. Introduction > Intellectual Property

1.5. Intellectual Property

The general idea of using an interchange format for electronic documents is in the public domain. Anyone is free to devise a set of unique data structures and operators that define an interchange format for electronic documents. However, Adobe Systems Incorporated owns the copyright for the particular data structures and operators and the written specification constituting the interchange format called the Portable Document Format. Thus, these elements of the Portable Document Format may not be copied without Adobe's permission.

Adobe will enforce its copyright. Adobe's intention is to maintain the integrity of the Portable Document Format standard. This enables the public to distinguish between the Portable Document Format and other interchange formats for electronic documents. However, Adobe desires to promote the use of the Portable Document Format for information interchange among diverse products and applications. Accordingly, Adobe gives anyone copyright permission, subject to the conditions stated below, to:


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