Polycrystalline Diamond Compact Bit Patents: Who Leads and Where the Field Concentrates
Five companies hold 67.9% of all 1,404 records in scope, and the next five push that combined share to 83.8% — this is a field with a narrow set of gatekeepers, not a fragmented one. Annual filings ran from 33 in 2017 to a peak of 58 in 2020, then settled into a range that still shows growth: 2021's 29 filings rose to 31 by 2024, a +7% gain over that three-year span. The 2025 and 2026 figures are undercounts because of publication lag, not evidence of decline.
- 1SMITH INTERNATIONAL INC458
- 2BAKER HUGHES CO274
- 3HALLIBURTON ENERGY SERVICES INC90
- 4NAT OILWELL VARCO LP69
- 5SAUDI ARABIAN OIL CO62
See the full polycrystalline diamond compact bits analysis in Eureka
- The complete ranking, not just the top five
- Every IPC branch with its share of the corpus
- The most-cited records, and where claim space is still thin
Common questions about PDC bit patents
Who holds the most patents on PDC drill bits?
Filing activity in this corpus is concentrated among a small number of established oilfield services companies, with the top five assignees together accounting for 67.9% of all 1,404 records in scope. The leading assignee alone holds a count far above the fifth-ranked company, which sits at 62 records. This concentration means a new filer's freedom-to-operate analysis should focus heavily on that small group rather than spreading evenly across the ranked field of 100 companies.
Is PDC drill bit patent filing activity growing or slowing down?
Filings grew 7% from 2021 (29) to 2024 (31), the most recent year that can be treated as complete. There was an earlier peak of 58 filings in 2020, so current volume sits below that high point but is trending upward again through 2024. Figures for 2025 and 2026 look lower only because publication lags filing by roughly 18 months, not because activity has actually dropped.
What technology areas are most claimed in PDC bit patents?
Earth and rock drilling (IPC class E21B) covers 88.8% of the 1,404 records, which is expected given the corpus is bit-focused. Beyond that core class, digital data processing (7.6%) and grinding tools and abrasives (5.6%) are the next most represented, while coating and surface deposition and analogue computation each sit under 3%. A record can carry multiple classes, so these shares add up to more than 100%.
Disclaimer. This analysis is based on Patsnap Eureka data drawn from a limited snapshot of global patent records and is provided for general information and reference only. Patent data carries inherent limitations — recent filings are under-counted because of publication lag, counts may be on a record or family basis, classification and applicant-name data may contain errors or duplicates, and the underlying search query defines the scope shown — so the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing here is an exhaustive prior-art, novelty, freedom-to-operate or validity search, nor does it constitute legal, financial or professional advice, and it should not be relied upon as such. Verify independently and review with qualified patent and legal professionals before acting on it.
Method: Filing trend and technology composition. Derived from a Patsnap search on Polycrystalline Diamond Compact Bits covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish. Every share divides by all records in scope. Data: Patsnap Eureka. See the full landscape report.