Yeast Chassis Stress Tolerance Patents: Leaders, Trends & White Space 2026
Yeast Chassis Stress Tolerance Patents: Who Holds the Core Claims
47.8% concentration. The top five assignees alone account for 2,295 of 4,801 records in scope — a field with a genuinely concentrated core, not a diffuse one. Filings rose from 73 in 2017 to a peak of 161 in 2018, then eased over the following years; 2021's 93 filings dropped to 53 by 2024, a -43% move over that span. 2025 and 2026 figures are still incomplete because publication typically lags filing by about 18 months, so the most recent years understate true filing activity.
- 1HUMAN GENOME SCI INC1,266
- 2ROSEN CRAIG A331
- 3RUBEN STEVEN M331
- 4BRISTOL MYERS SQUIBB CO194
- 5BARASH STEVEN C173
See the full yeast chassis stress tolerance 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
Frequently asked questions
Who holds the most patents on yeast chassis stress tolerance?
One assignee leads with 1,266 records in this dataset, well ahead of the rest of the ranked field — the fifth-place holder has 173 and tenth place has 72. The top five assignees combined account for 47.8% of all 4,801 records in scope, and the top ten reach 57.2%. Strong co-assignee links among the leading names, some pairs exceeding 300 shared records, suggest the top of the field is more coordinated than a simple company ranking implies.
Is patent filing in this space growing or shrinking?
Filing peaked in 2018 at 161 records and has generally eased since, with 2021’s 93 filings dropping to 53 by 2024, a -43% move. That said, 2025 and 2026 counts are still incomplete because publication typically lags actual filing by about 18 months, so the most recent years will fill in further and should not yet be read as a continuing decline.
What technology areas dominate yeast chassis stress-tolerance patents?
C12N, covering microorganisms and genetic engineering, appears in 90.9% of the 4,801 records and anchors the field. C07K (peptides and proteins) and C12Q (enzyme and DNA measuring/testing) each appear in well over half of records, and C12P (fermentation and enzymatic synthesis) is close behind at 56.7%. This pattern shows that stress-tolerance claims are typically bundled with assay methods or fermentation-process claims rather than filed as standalone mechanism patents.
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 Yeast Chassis Stress Tolerance 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.