The dataset’s assignee ranking shows a clear leader with 143 records out of 572 in scope, well ahead of the fifth-place filer at 25. The top five filers combined hold 50.3% of all records, meaning half the field’s patent activity traces back to a small group of companies spanning wireless chipsets, enterprise tracking hardware, and medical navigation. Anyone assessing competitive risk should look closely at this leader’s claims first, since its portfolio size alone makes it the most likely source of blocking prior art.

Growth has been modest rather than explosive: filings rose from 50 in 2021 to 53 in 2024, a +6% increase over three years, after a peak of 115 filings in 2023. The 2025 and 2026 figures in any dataset like this will look low, but that is largely because patent publication lags actual filing by roughly 18 months, not because interest has dropped. Treat the most recent one to two years of any RTLS filing trend as provisional until later publication cycles fill in the gap.

Wireless communication networks (H04W) and radar/positioning methods (G01S) dominate, appearing in 50.9% and 45.6% of the 572 records respectively, since these codes cover the core mechanics of tag-to-anchor communication and position calculation. A smaller but distinct cluster sits in A61B (diagnosis and surgery, 10.0%), reflecting medical navigation as a specific RTLS application. Business-process and software-processing classes like G06Q and G06F are comparatively thin, at 5.6% and 5.1%, suggesting less claim crowding around data-analytics or workflow-integration approaches to RTLS.