One assignee holds 7,258 of the 23,786 records in this dataset, well ahead of the rest of the field — the fifth-ranked assignee holds 441 and the tenth holds 80. The top five assignees combined account for 91.3% of all records, and the top ten reach 94.8%, which means the mechanical design space is concentrated in a handful of large instrument makers rather than spread across many independent filers. Anyone entering this space should expect their core mechanical claims to be checked against these leaders first.

Filings peaked in 2018 at 1,758 and have declined since; by 2024, the last year that can be treated as complete, annual filings had fallen to 341, a 68% drop from the 1,065 filed in 2021. Counts for 2025 and 2026 appear much lower still, but that reflects publication lag of roughly 18 months rather than an actual collapse in activity. The honest read is a sustained multi-year decline through 2024, with the very latest years too early to interpret.

Almost 80% of the 23,786 records (79.7%) fall under IPC class A61B, diagnosis and surgery, reflecting the core mechanical stapler mechanism. Smaller but notable shares sit in G16H healthcare informatics (4.5%) and A61L sterilising and disinfecting (3.2%), with implants, digital data processing, body-fluid devices, power supply, and plastics shaping each under 2%. Records can carry multiple IPC classes, so these figures add up to more than 100% of the record total.