56 patents currently held
3 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 Aug 2027. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
14
Ending by 2030
Aug 2027
Next term end
52
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 Sep 2030 · High confidence
Also notable
Ends Feb 2028 · High confidence
Also notable
Ends Jul 2029 · High confidence
Self-Assembling Peptide and Peptide Gel with High Strength
US 8,729,032
Cited by 25 later US patents, top 25% of utility patents granted in 2014 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2030.
Tilted-Wear Type Contact Lens
US 8,192,020
Cited by 47 later US patents, top 25% of utility patents granted in 2012 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2028. A terminal disclaimer caps this term to an earlier patent's.
Disinfection System of Contact Lens
US 9,427,488
The largest patent family in this portfolio, 7 related applications, renewed at every maintenance window due so far. Protection runs to 2029.
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.
- 3 fees due Apr 15 to 20, 2027 · next Apr 15
- 1 fee due May 3, 2027The maintenance fee for Contact Lens Case (US 9,173,464) comes due May 3, 2027. Unpaid by Nov 3, 2027, it lapses early.
- 1 fee due Jun 22, 2027The maintenance fee for Apparatus for Optometric Self-Examination, Management Server and Contact Lens Selection System (US 9,215,974) comes due Jun 22, 2027. Unpaid by Dec 22, 2027, it lapses early.
- 1 fee due Aug 18, 2027The maintenance fee for Diffractive Multi-Focal Ophthalmic Lens and Method for Manufacturing Diffractive Multi-Focal Ophthalmic Lens (US 10,564,448) comes due Aug 18, 2027. Unpaid by Feb 18, 2028, it lapses early.
Recent changes
- Nov 9Assignment recorded on 1 record: Ito, Yasuma and 2 others to Menicon Co., Ltd. Recorded Nov 9, 2026, executed Sep 2, 2026. Conveyance as recorded: Assignment of Assignor's Interest. A recorded assignment is a filed document, not a statement of current ownership. Reel 76682, frame 264.
- 1 of the patents on this record was granted since Aug 16, 2026
What they patent
The 5 largest of its 52 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Disinfection System of Contact Lens | 3 in force | to Jul 2029 |
| Ocular Device Case and Refill Container Used for the Ocular Device Case | 2 in force | to Mar 2040 |
| Contact Lens Manufacturing Method and Contact Lens | 2 in force | to Dec 2034 |
| Polymer Material | 1 in force | to Oct 2042 |
| Apparatus and Methods for Molding Rigid Ocular Lenses | 1 in force | to Apr 2042 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,837,327 | Contact Lens User Support System and Support Method In force · High confidence | In force | High confidence | |
| US D690,207 | Packaging Container In force · High confidence | In force | High confidence | |
| US D695,014 | Package Suitable for Temporarily Storing Contact Lenses In force · High confidence | In force | High confidence | |
| US 8,192,020 | Tilted-Wear Type Contact Lens In force · High confidence | In force | High confidence | |
| US 10,137,218 | Disinfection System of Contact Lens In force · Low confidence | In force | Low confidence | |
| US 12,042,567 | Disinfection System of Contact Lens In force · Low confidence | In force | Low confidence | |
| US 9,427,488 | Disinfection System of Contact Lens In force · High confidence | In force | High confidence | |
| US 8,755,117 | Method of Manufacturing a Diffraction Lens Other Than an Aphakic Intraocular Lens In force · High confidence | In force | High confidence | |
| US 8,500,805 | Method for Manufacturing Aphakic Intraocular Lens In force · High confidence | In force | High confidence | |
| US 8,512,632 | Manufacturing Method of Contact Lens Package In force · High confidence | In force | High confidence |
Also on record, not counted in the 56: 3 patents in force now held by others · 73 patents ended · 15 applications pending · 49 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.