The assignee ranking in this corpus is led by a single academic assignee holding 125 of the 507 records in scope, well ahead of the fifth-ranked assignee at 29 and tenth-ranked at 13. The leading names are dominated by universities and named individual inventors rather than large electronics manufacturers, and the top five assignees together account for 82.4% of all 507 records. This concentration means the foundational geometry and fabrication claims were largely staked out early, and newer filers are more likely to find open space in application-specific integration than in the base interconnect structure itself.

Filing activity peaked at 32 records in 2017 and has declined since, with a -100% change measured between 2021 and 2024. However, patent publication lags filing by roughly 18 months, so the most recent one to two years in any dataset always understate real activity — the 2025-2026 figures here are still filling in and should not be read as a current decline. The honest read is that the foundational filing wave crested years ago and 2024 is the last year that can be treated as a complete picture.

The dataset’s IPC composition shows A61B (diagnosis and surgery) touching 46.5% of the 507 records and H01L (semiconductor devices) at 32.9%, reflecting how often interconnect claims are written inside a medical-device or sensing-system context. H05K (printed circuits) sits at 28.2%, while the dedicated conductor class H01B is comparatively thin at 5.3%. Because a single record can carry multiple IPC codes, these percentages add up to more than 100% and should be read as coverage, not a partition of the field.