2,523 patents currently held
896 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.
4 more records may belong here and await a decision; they are not counted.
The next term ends in Nov 2026. from the record
Of the 896 now held by other companies, 306 name DDP Specialty Electronic Materials US LLC as their current owner, and 590 more name another party. Each row says which.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
379
Ending by 2030
Nov 2026
Next term end
2,318
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 Mar 2028 · High confidence
Also notable
Ends no later than Sep 2027 · Medium confidence
Also notable
Ends Jun 2033 · High confidence
Catalyst Composition Comprising Shuttling Agent for Ethylene Multi-Block Copolymer Formation
US 7,858,706
Cited by 215 later US patents, top 5% of utility patents granted in 2010 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2028.
Aqueous Dispersion, Its Production Method, and Its Use
US 7,803,865
Cited by 131 later US patents, top 5% of utility patents granted in 2010 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2027. A terminal disclaimer is on file and its reference is not resolved, so no cap is applied and the date may move earlier, never later.
Process for Production of High Melt Flow Propylene-Based Polymer and Product from Same
US 10,358,505
Cited by 16 later US patents, top 25% of utility patents granted in 2019 in our data. Protection runs to 2033.
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.
- 10 fees due Nov 14 to 30, 2026 · next Nov 14
- 49 fees due Dec 2 to 30, 2026 · next Dec 2
- 37 fees due Jan 2 to 30, 2027 · next Jan 2
- 35 fees due Feb 1 to 28, 2027 · next Feb 1
- 30 fees due Mar 1 to 29, 2027 · next Mar 1
- 44 fees due Apr 1 to 29, 2027 · next Apr 1
- 54 fees due May 3 to 28, 2027 · next May 3
- 47 fees due Jun 1 to 30, 2027 · next Jun 1
- 36 fees due Jul 2 to 30, 2027 · next Jul 2
- 33 fees due Aug 2 to 27, 2027 · next Aug 2
- 59 fees due Sep 1 to 30, 2027 · next Sep 1
- 45 fees due Oct 2 to 30, 2027 · next Oct 2
- 32 fees due Nov 3 to 12, 2027 · next Nov 3
Recent changes
- Nov 12Assignment recorded on 1 record: Chen, Xue to Dow Global Technologies LLC Recorded Nov 12, 2026, executed Jan 20, 2023. Conveyance as recorded: Assignment of Assignor's Interest. A recorded assignment is a filed document, not a statement of current ownership. Reel 76735, frame 498.
- Nov 11Assignment recorded on 1 record: Pujari, Saswati to Dow Global Technologies LLC Recorded Nov 11, 2026, executed Apr 1, 2021. Conveyance as recorded: Assignment of Assignor's Interest. A recorded assignment is a filed document, not a statement of current ownership. Reel 76719, frame 650.
- 50 of the patents on this record were granted since Aug 16, 2026
- 47 terms have ended since Aug 16, 2026
What they patent
The 5 largest of its 2,318 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Filled Polymer Compositions Made from Interpolymers of Ethylene/A-Olefins and Uses Thereof | 9 in force | to May 2028 |
| Multifunctional Chain Shuttling Agents | 6 in force | to Sep 2030 |
| Process for Oligomerization | 5 in force | to Mar 2036 |
| Self-Limiting Catalyst System with Controlled Aluminum to SCA Ratio and Method | 5 in force | to Jun 2033 |
| Composition, Polymer Composite Article Formed Therewith, and Method of Preparing Same | 4 in force | to Feb 2039 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,445,683 | Thermoplastic Resin Compositions Suitable for Use in Laminated Safety Glass In force · High confidence | In force | High confidence | |
| US 8,177,939 | Cellulose Articles Containing an Additive Composition In force · High confidence | In force | High confidence | |
| US 8,859,661 | Coating Composition, a Coated Article, and Method of Forming Such Articles In force · High confidence | In force | High confidence | |
| US 7,662,881 | Viscosity Index Improver for Lubricant Compositions In force · High confidence | In force | High confidence | |
| US 8,142,657 | Insertion-Point Seal for Spiral Wound Module In force · High confidence | In force | High confidence | |
| US 8,969,495 | Processes of Controlling Molecular Weight Distribution in Ethylene/Alpha-Olefin Compositions In force · High confidence | In force | High confidence | |
| US 7,893,159 | Blends of Styrenic Block Copolymers and Propylene-Alpha Olefin Copolymers In force · High confidence | In force | High confidence | |
| US 7,622,192 | Solar Control Laminates In force · High confidence | In force | High confidence | |
| US 7,382,263 | Oral Drug Compliance Monitoring Using Radio Frequency Identification Tags In force · High confidence | In force | High confidence | |
| US 7,847,029 | Elastomeric Resin Compositions with Improved Resistance to Draw Resonance In force · High confidence | In force | High confidence |
Also on record, not counted in the 2,523: 896 patents in force now held by others · 1,750 patents ended · 1,003 applications pending · 1,744 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.