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Description

F99Z is a residual classification within Section F (Mechanical Engineering, Lighting, Heating, Weapons, Blasting) used for inventions and technical disclosures that do not fit within any other established subclass of this section. This classification functions as a catch-all category for mechanical, thermal, or related engineering technologies that fall outside the defined scope of primary F-section classes. Patents classified here typically represent novel or interdisciplinary subject matter in mechanical engineering domains that lack a dedicated classification home.

Filing statistics

IPC subclass F99Z recorded 7 patent applications worldwide between 2013 and 2023. Annual filings declined from 2 in 2017 to 1 in 2023 (-50%). The most active applicants in class F99 are HAZAMA MOTOKO (2 applications), AGZENAY EL AMIN (1 applications) and CEMAL CEYLAN (1 applications).

Source: EPO PATSTAT, worldwide filings