Roller Compaction Patents: Who Leads, Where the Gaps Are 2026
Roller compaction and dry granulation patents: leaders, filing trends and white space
44.7% concentration. The top 5 assignees alone account for 182 of the 407 records in scope, and the top 10 combined reach 63.6% — a field with a narrow set of entrenched filers. Annual filings peaked at 41 in 2018, fell through the early 2020s to a low of 4 in 2021, then climbed back to 17 by 2024 — a +325% increase over that three-year span. 2025 and 2026 figures are still filling in as publication lags filing by roughly 18 months, so the most recent two years should not be read as a slowdown.
- 1GLAXO GROUP LTD65
- 2TESARO INC38
- 3ASTRAZENECA AB36
- 4CELGENE CORP22
- 5OMNIGEN RESEARCH LLC21
See the full roller compaction and dry granulation 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 roller compaction and dry granulation patents
Who holds the most roller compaction and dry granulation patents?
The dataset’s assignee ranking shows one company clearly ahead with 65 records, well above the fifth-ranked assignee’s 21. The top 5 assignees together hold 182 of the 407 records in scope, or 44.7%, and the top 10 extend that to 63.6%. Beyond that leading group, the ranking includes 98 companies in total, most holding only a small number of families, so the field combines a concentrated top tier with a long tail of narrower filers.
Is roller compaction patent activity growing or slowing down?
Filings peaked at 41 in 2018, fell to a low of 4 in 2021, and then rebounded sharply to 17 by 2024 — a +325% increase over that three-year span. Because publication typically lags filing by around 18 months, the lower counts shown for 2025 and 2026 are an artefact of incomplete data rather than evidence of a real slowdown. Treated on its own terms, 2024 is the most recent year that can be read as a complete signal, and it points to renewed rather than declining activity.
What technology areas overlap with dry granulation patents?
Medicinal preparations (A61K) and therapeutic activity (A61P) dominate, appearing on 58.7% and 30.5% of the 407 records respectively, reflecting the technique’s heavy use in tablet and oral dosage manufacturing. Smaller but real shares also appear in heterocyclic compounds, catalysis and chemical processing, animal feed, powder metallurgy, plastics shaping and additive manufacturing. Anyone working outside pharmaceutical formulation should still check these adjacent classes rather than assume the prior art is limited to drugmakers.
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 Roller Compaction and Dry Granulation 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.