331 patents currently held
109 more in force are now held by other companies
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
1 more record may belong here and awaits a decision; it is not counted.
The next term ends in Nov 2026. from the record
Of the 109 now held by other companies, 41 name Unm Rainforest Innovations as their current owner, and 68 more name another party. Each row says which.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
96
Ending by 2030
Nov 2026
Next term end
256
Patent families
When these terms end
Held patents by the year their term ends
notable patents
fee due within 90 days
all others
Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
Notable: the highest-ranked patents in this portfolio by citations and family size. Fee due within 90 days: a maintenance fee is due within 90 days of when this page was computed and not yet paid.
Notable patents
Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
Notable
Ends Jul 2027 · High confidence
Also notable
Ends Sep 2035 · High confidence
Also notable
Ends May 2030 · High confidence
Pulsed Growth of Catalyst-Free Growith of Gan Nanowires and Application in Group III Nitride Semiconductor Bulk Material
US 7,521,274
The most cited patent in this portfolio, cited by 287 later US patents, top 5% of utility patents granted in 2009 in our data. Protection runs to 2027.
Synthetic Long Read DNA Sequencing
US 10,266,904
Cited by 44 later US patents, top 5% of utility patents granted in 2019 in our data, and renewed at 2 of 3 maintenance windows. Protection runs to 2035.
Structural Illumination and Evanescent Coupling for the Extension of Imaging Interferometric Microscopy
US 9,239,455
Cited by 47 later US patents, top 10% of utility patents granted in 2016 in our data, and renewed at every maintenance window due so far. Protection runs to 2030.
Formerly held, still cited
Notable
Ends Jul 2028 · High confidence
Cited by 65 later US patents, top 10% of utility patents granted in 2012 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2028.
Also notable
Ends Mar 2033 · High confidence
Cited by 23 later US patents, top 25% of utility patents granted in 2018 in our data, and renewed at 2 of 3 maintenance windows. Protection runs to 2033.
now held by Rensselaer Polytechnic Institute
Fee deadlines
Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.
- 4 fees due Dec 9 to 30, 2026 · next Dec 9
- 8 fees due Jan 2 to 30, 2027 · next Jan 2
- 9 fees due Feb 6 to 25, 2027 · next Feb 6
- 3 fees due Mar 10 to 22, 2027 · next Mar 10
- 5 fees due Apr 6 to 15, 2027 · next Apr 6
- 9 fees due May 3 to 24, 2027 · next May 3
- 3 fees due Jun 3 to 24, 2027 · next Jun 3
- 5 fees due Jul 7 to 26, 2027 · next Jul 7
- 11 fees due Aug 4 to 25, 2027 · next Aug 4
- 6 fees due Sep 1 to 30, 2027 · next Sep 1
- 5 fees due Oct 5 to 19, 2027 · next Oct 5
- 2 fees due Nov 5, 2027
Recent changes
- 9 terms have ended since Aug 16, 2026
What they patent
The 5 largest of its 256 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,432,161 | Fabrication of Optical-Quality Facets Vertical to a (001) Orientation Substrate by Selective Epitaxial Growth In force · High confidence | In force | High confidence | |
| US 8,841,756 | Fabrication of Optical-Quality Facets Vertical to a (001) Orientation Substrate by Selective Epitaxial Growth In force · High confidence | In force | High confidence | |
| US 7,708,991 | Method of Treating Cancer and Identifying Novel Anti-Cancer Compounds In force · High confidence | In force | High confidence | |
| US 9,156,004 | Fabrication of Enclosed Nanochannels Using Silica Nanoparticles In force · High confidence | In force | High confidence | |
| US 7,633,083 | Metamorphic Buffer on Small Lattice Constant Substrates In force · High confidence | In force | High confidence | |
| US 7,947,579 | Method of Making Dense, Conformal, Ultra-Thin Cap Layers for Nanoporous Low-K Ild by Plasma Assisted Atomic Layer Deposition In force · High confidence | In force | High confidence | |
| US 10,060,904 | Fabrication of Enclosed Nanochannels Using Silica Nanoparticles In force · High confidence | In force | High confidence | |
| US 7,871,762 | Hyperglycosylated HCG (Invasive Trophoblast Antigen) in Differential Diagnosis of Malignant or Invasive Trophoblastic Disease In force · High confidence | In force | High confidence | |
| US 8,716,045 | Pulsed Growth of Catalyst-Free Growth of Gan Nanowires and Application in Group III Nitride Semiconductor Bulk Material In force · Low confidence | In force | Low confidence | |
| US 7,476,787 | Addressable Field Enhancement Microscopy In force (reinstated) · High confidence | In force (reinstated) | High confidence |
Also on record, not counted in the 331: 109 patents in force now held by others · 140 patents ended · 1 application pending · 176 applications abandoned. List them
Sources and methods
Compiled from USPTO application file histories, grants and recorded assignments, with the company's own names reviewed by hand. How this record was built
Portfolio grouped automatically from ownership conveyances to the names matched to this company, usually every name that begins with its own, so it counts patents an affiliate holds; each list row names the holder of record. Security interests are excluded and ambiguous records are not reviewed by hand.
Fee due within 90 days marks a patent with a maintenance fee due within 90 days of the date this page was computed and not yet recorded paid, so it can end earlier than the bar shows. A fee left unpaid ends the patent at the close of the six month grace period that follows its due date, not on the due date itself. It is not a prediction that the fee will be missed.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.