Hip Stem Fixation Patents: Leaders, Trends & White Space 2026
Hip stem fixation and bone ingrowth patents: who holds the claims and where the field is still open
One assignee dominates the ranked field. the leader holds 23 records against a fifth-place count of 5 and a tenth-place count of 2, a steep drop-off rather than an even spread. Volume moved from 3 records in 2017 to a peak of 4 in 2023, with the most recent complete year, 2024, at 3 — up 50% from 2021's 2 records. 2025 and 2026 show fewer records only because publication lags filing by roughly 18 months; treat the tail end of the chart as still filling in rather than as a decline.
- 1ZIMMER INC23
- 2MCGILL UNIV15
- 3KIRWAN DAVID PHILLIP12
- 4PAPROSKY WAYNE G9
- 5IP2IPO INNOVATIONS LTD5
See the full hip stem fixation and bone ingrowth 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 this landscape
Who holds the most patents on hip stem fixation and bone ingrowth?
One assignee leads the ranked field with 23 records, well ahead of the rest — fifth place holds only 5 and tenth place just 2. This steep drop-off means the field is not evenly contested; a single corporate portfolio covers a large share of the documented claim space, while the remaining 26 ranked assignees each hold much smaller positions. Anyone assessing freedom-to-operate should treat that leader’s portfolio as the first thing to map, not an afterthought.
Is patent filing in cementless femoral stem fixation growing or slowing down?
It is growing, based on the complete-year data available. Records rose from 2 in 2021 to 3 in 2024, a 50% increase over that span, with 2023 the peak year so far at 4. The apparent dip in 2025 and 2026 is an artefact of publication lag — publication typically trails filing by around 18 months — so those final years should not be read as a slowdown.
What technology areas do these patents actually cover?
The overwhelming majority, 93.6% of the 78 records in scope, sit in IPC subclass A61F, which covers implants and prostheses generally. Smaller but meaningful overlaps exist with A61L sterilising and disinfecting technology (15.4%) and A61C dentistry-adjacent techniques (14.1%), both likely reflecting shared porous-coating and surface-treatment methods rather than a distinct product line. Because a single record can carry multiple IPC classes, these percentages add up to more than 100% and should each be read against the 78-record total.
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 Hip Stem Fixation and Bone Ingrowth 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.