The ranking covers 100 companies counted by patent records, with a steep concentration at the top: the leading assignee alone holds 2,576 records, compared with 390 at fifth place and 246 at tenth. The five leading assignees together account for 51.0% of all 10,621 records in scope, and that share rises to 64.7% across the ten leading assignees. This means most of the claim space in this field is held by a small number of filers, with a long tail of smaller entrants making up the remainder.

Filing volume peaked in 2022 at 1,340 records and has since eased, falling -28% from 1,247 in 2021 to 902 in 2024, the most recent year that can be treated as complete. Data for 2025 and 2026 will still rise as publications catch up, since publication typically lags filing by around 18 months. Read the recent dip as a data-lag effect rather than confirmed evidence that the technology is losing filer interest.

The corpus splits across two distinct classification clusters: a communications-network cluster led by H04W (67.7% of records) and H04L (35.9%), and a smaller biological-processing cluster covering C12N microorganisms and genetic engineering (10.5%), A61K medicinal preparations (7.8%) and C07K peptides and proteins (6.6%). Because a single record can carry multiple IPC classes, these shares add up to more than 100% and should not be summed as if they were mutually exclusive categories. The overlap suggests the search terms capture both network-architecture filings and cell-processing hardware filings that happen to share vocabulary like ‘processing time’ and ‘selection.’