The assignee ranking in this dataset spans 100 companies, with the leading filer holding 517 records against a fifth-place figure of 131 and a tenth-place figure of 84. That gap indicates one filer has built a substantially larger claim footprint than the rest of the field, though the ranking itself is not a top-50 or top-100 list in the sense of covering every filer — it is the full set the assignee endpoint returns. Anyone doing freedom-to-operate work should start with the leading names before moving down the tail.

Filings peaked at 353 in 2018 and have since eased, running at 204 in 2021 and 189 in 2024 — a 7% decline over that three-year span. That is a cooling rather than a collapse. The 2025 and 2026 figures in any such dataset are understated because patent publication typically lags filing by around 18 months, so the most recent one to two years should not be read as evidence of an accelerating drop.

G06F, the digital data processing classification, appears on 81.7% of the 4,523 records in scope, far ahead of display control circuits (G09G, 6.6%) and optical control and modulation (G02F, 6.2%). Smaller shares cover organic semiconductors, wireless communication, printed circuit assembly, semiconductor devices and pulse/logic circuits. Because a single record can carry several classes, these shares add up to more than 100% of the record base, and the pattern shows that most contested claim territory sits in signal processing and controller logic rather than the physical sensor stack.