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Description

D99Z serves as a residual classification for textile and paper-related inventions that do not fit within the established subclasses of Section D. This category captures innovations in textiles, paper, and related technologies that fall outside the scope of more specific IPC divisions covering fibers, yarns, fabrics, paper manufacturing, or finishing processes. Examiners should exhaust all relevant specific classifications in Section D before assigning D99Z, as this subclass is intended only for genuinely unclassifiable subject matter. D99Z functions as a catch-all provision to ensure comprehensive coverage of the textile and paper domain while maintaining the integrity of more specialized classification codes.

Filing statistics

CPC subclass D99Z recorded 15 patent applications worldwide between 2013 and 2023. Annual filings grew from 1 in 2015 to 1 in 2021 (+0%), peaking at 10 applications in 2016. The most active applicants in class D99 are MILLIKEN & COMPANY (11 applications), MILLIKEN & COMPANY (3 applications) and 美利肯公司 (1 applications).

Source: EPO PATSTAT, worldwide filings