DDC Trademark

On-line publication of electronic periodicals; providing an online index relating to a system of classifying the field of human knowledge; providing temporary use of non-downloadable cloud-based software for library classification, cataloging, and metadata management, namely, software featuring a comprehensive electronic database of classification numbers, subject headings, and associated metadata derived from a standardized bibliographic classification system; providing online tools for searching and browsing classification numbers and subject headings; providing customizable annotation and note-taking features within bibliographic records; providing access to continually updated classification data reflecting evolving topics and multilingual content; providing a user interface for organizing and managing library and information collections; providing access to linked data resources, including uniform resource identifiers (URIs) and associated metadata; and providing application programming interfaces (APIs) for accessing and integrating classification data and linked data from the foregoing software into third-party systems and services