INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF

Description

E05Y is an indexing scheme providing supplementary classification for technologies covered in subclasses E05D and E05F (locks, keys, window/door fittings, and safes) that involve electric control systems, power supply mechanisms, signal transmission, user interface design, mounting solutions, and coupling methods. This classification captures cross-cutting technical aspects such as electrical activation, power management, wireless communication protocols, control interfaces, mechanical installation details, and auxiliary operational functions that do not fit neatly within the primary structural classifications. It enables patent examiners and searchers to locate inventions by their functional or technical characteristics rather than their primary mechanical structure, improving retrieval of multi-faceted security and fastening technologies.

Filing statistics

CPC subclass E05Y recorded 67,440 patent applications worldwide between 2013 and 2023. Annual filings grew from 4,329 in 2013 to 4,627 in 2023 (+7%), peaking at 8,505 applications in 2018. The most active applicants in class E05 are KIEKERT (2,802 applications), HYUNDAI MOTOR COMPANY (1,609 applications) and LG ELECTRONICS (1,467 applications).

Source: EPO PATSTAT, worldwide filings