30 patents currently held
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
The next term ends in Sep 2034. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
0
Ending by 2030
Sep 2034
Next term end
8
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 15, 2026 · includes USPTO assignment & status data published Nov 15, 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 Sep 2034 · Low confidence
Also notable
Ends Jul 2035 · Low confidence
Also notable
Ends Jun 2038 · High confidence
Stable Silk Protein Fragment Compositions
US 11,298,311
Cited by 11 later US patents, top 10% of utility patents granted in 2022 in our data. Protection runs to 2034. A terminal disclaimer caps this term to an earlier patent's.
Silk Performance Apparel and Products and Methods of Preparing the Same
US 11,453,975
Cited by 11 later US patents, top 10% of utility patents granted in 2022 in our data. Protection runs to 2035. A terminal disclaimer caps this term to an earlier patent's.
Silk-Hyaluronic Acid Based Tissue Fillers and Methods of Using the Same
US 11,660,372
Cited by 3 later US patents, top 25% of utility patents granted in 2023 in our data. Protection runs to 2038. A terminal disclaimer caps this term to an earlier patent's.
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.
- 2 fees due Nov 28 to 30, 2026 · next Nov 28
- 1 fee due May 17, 2027The maintenance fee for Stable silk protein fragment compositions (US 9,187,538) comes due May 17, 2027. Unpaid by Nov 17, 2027, it lapses early.
- 3 fees due Jul 2 to 23, 2027 · next Jul 2
- 1 fee due Sep 17, 2027The maintenance fee for Stable Silk Fibroin Based Pharmaceutical Formulations (US 10,588,843) comes due Sep 17, 2027. Unpaid by Mar 17, 2028, it lapses early.
- 2 fees due Oct 7 to 30, 2027 · next Oct 7
Recent changes
- 1 of the patents on this record was granted since Aug 17, 2026
What they patent
The 5 largest of its 8 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Stable silk protein fragment compositions | 14 in force | to Nov 2034 |
| Silk Performance Apparel and Products and Methods of Preparing the Same | 6 in force | to Oct 2037 |
| Silk Protein Bonded Layered Materials and Methods of Making and Using Thereof | 2 in force | to Apr 2041 |
| Silk Coated Fabrics and Products and Methods of Preparing the Same | 2 in force | to Sep 2038 |
| Silk-Hyaluronic Acid Based Tissue Fillers and Methods of Using the Same | 2 in force | to Jun 2038 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 9,187,538 | Stable silk protein fragment compositions In force · High confidence | In force | High confidence | |
| US 9,511,012 | Stable Silk Protein Fragment Compositions In force · Low confidence | In force | Low confidence | |
| US 9,517,191 | Stable Silk Protein Fragment Compositions In force · Low confidence | In force | Low confidence | |
| US 9,522,107 | Stable Silk Protein Fragment Compositions In force · Low confidence | In force | Low confidence | |
| US 9,522,108 | Stable Silk Protein Fragment Compositions In force · High confidence | In force | High confidence | |
| US 9,545,369 | Stable Silk Protein Fragment Compositions In force · High confidence | In force | High confidence | |
| US 10,166,177 | Silk Protein Fragment Compositions and Articles Manufactured Therefrom In force · High confidence | In force | High confidence | |
| US 10,588,843 | Stable Silk Fibroin Based Pharmaceutical Formulations In force · Low confidence | In force | Low confidence | |
| US 10,610,478 | Stable Silk Fibroin Based Pharmaceutical Formulations In force · Low confidence | In force | Low confidence | |
| US 10,987,294 | Stable Silk Fibroin Based Pharmaceutical Formulations In force · Low confidence | In force | Low confidence |
Also on record, not counted in the 30: 3 patents ended · 18 applications pending · 15 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.