Five patents currently held, every record listed here

Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.

The next term ends in Mar 2035. from the record

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

Ending by 2030

Mar 2035

Next term end

Patent families

When these terms end

Each bar runs from grant to computed term end. 2019 to 2037.

US 11,737,916 Magnetic Eye Shields and Methods of Treatment and Diagnosis Using the Same Mar 5, 2035

US 11,740,239 Identification and Isolation of Human Corneal Endothelial Cells (HCECS) Jun 29, 2035

US 10,327,945 Magnetic Eye Shields and Methods of Treatment and Diagnosis Using the Same Nov 24, 2035

US 10,655,102 Identification and Isolation of Human Corneal Endothelial Cells (HCECS) Oct 6, 2036

US 10,478,332 Magnetic Operating Microscopes and Methods of Treatment and Diagnosis Using the Same Mar 14, 2037

20232027203120352037

4 pending applications: term is not computable until grant.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 patents

Ranked by citations and family size, against patents of the same kind granted the same year. How we rank

Notable

Magnetic Eye Shields and Methods of Treatment and Diagnosis Using the Same US 10,327,945

The most cited patent in this portfolio, cited by 11 later US patents, top 25% of utility patents granted in 2019 in our data. Protection runs to 2035.

Ends Nov 2035 · Medium confidence Also notable

Identification and Isolation of Human Corneal Endothelial Cells (HCECS) US 10,655,102

The newest of the three, granted 2020. It anchors the portfolio to 2036, later than anything else here.

Ends Oct 2036 · High confidence Also notable

Magnetic Operating Microscopes and Methods of Treatment and Diagnosis Using the Same US 10,478,332

The earliest of the three still in force, granted 2019 and renewed since. Its term ends first, in 2037.

Ends Mar 2037 · High confidence

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.

1 fee due Dec 25, 2026
The maintenance fee for Magnetic Eye Shields and Methods of Treatment and Diagnosis Using the Same (US 10,327,945) comes due Dec 25, 2026. Unpaid by Jun 25, 2027, it lapses early.
2 fees due Feb 28, 2027
1 fee due May 19, 2027
The maintenance fee for Magnetic Operating Microscopes and Methods of Treatment and Diagnosis Using the Same (US 10,478,332) comes due May 19, 2027. Unpaid by Nov 19, 2027, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

Nothing was recorded against this company's patents in the last 90 days.

What they patent

Grouped by real patent family, largest first, labeled by the earliest filing in each. No technology classification is inferred from titles.

Identification and Isolation of Human Corneal Endothelial Cells (HCECS)	2 in force	to Oct 2036
Magnetic Eye Shields and Methods of Treatment and Diagnosis Using the Same	2 in force	to Nov 2035
Magnetic Operating Microscopes and Methods of Treatment and Diagnosis Using the Same	1 in force	to Mar 2037

Patents held now

Soonest term end first.

Showing 1 to 5 of 5

Patent	Title	Status	Expires	Confidence
US 11,737,916	Magnetic Eye Shields and Methods of Treatment and Diagnosis Using the Same In force Term ends Mar 5, 2035 · Medium confidence	In force	Term ends Mar 5, 2035	Medium confidence
US 11,740,239	Identification and Isolation of Human Corneal Endothelial Cells (HCECS) In force Term ends Jun 29, 2035 · High confidence	In force	Term ends Jun 29, 2035	High confidence
US 10,327,945	Magnetic Eye Shields and Methods of Treatment and Diagnosis Using the Same In force Term ends Nov 24, 2035 · Medium confidence	In force	Term ends Nov 24, 2035	Medium confidence
US 10,655,102	Identification and Isolation of Human Corneal Endothelial Cells (HCECS) In force Term ends Oct 6, 2036 · High confidence	In force	Term ends Oct 6, 2036	High confidence
US 10,478,332	Magnetic Operating Microscopes and Methods of Treatment and Diagnosis Using the Same In force Term ends Mar 14, 2037 · High confidence	In force	Term ends Mar 14, 2037	High confidence

Also on record, not counted in the 5: 4 applications pending. 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.

Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.

Export every term end as CSV · Pro

Emmecell, Inc.