27 patents currently held
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
The next term ends in Oct 2035. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
0
Ending by 2030
Oct 2035
Next term end
7
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 Oct 2036 · High confidence
Also notable
Ends Oct 2035 · High confidence
Also notable
Ends Mar 2039 · High confidence
Systems and Methods for Treating Hydrocephalus
US 10,272,230
The most cited patent in this portfolio, cited by 79 later US patents, top 5% of utility patents granted in 2019 in our data. Protection runs to 2036.
Systems and Methods for Deploying an Implant in the Vasculature
US 10,307,576
Cited by 53 later US patents, top 5% of utility patents granted in 2019 in our data. Protection runs to 2035. A terminal disclaimer caps this term to an earlier patent's.
Systems and Methods for Minimally Invasive Drug Delivery to a Subarachnoid Space
US 11,013,900
Cited by 41 later US patents, top 5% of utility patents granted in 2021 in our data. Protection runs to 2039.
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 Dec 4, 2026
- 1 fee due Apr 3, 2027The maintenance fee for Catheter Systems and Methods for Medical Procedures Using Catheters (US 11,771,875) comes due Apr 3, 2027. Unpaid by Oct 4, 2027, it lapses early.
- 1 fee due Jun 26, 2027The maintenance fee for Systems and Methods for Minimally Invasive Drug Delivery to a Subarachnoid Space (US 11,850,390) comes due Jun 26, 2027. Unpaid by Dec 27, 2027, it lapses early.
- 1 fee due Jul 30, 2027The maintenance fee for Directional Stent for Accessing Extravascular Spaces (US 11,883,309) comes due Jul 30, 2027. Unpaid by Jan 31, 2028, it lapses early.
- 1 fee due Oct 9, 2027The maintenance fee for Systems and Methods for Endovascularly Accessing a Subarachnoid Space (US 11,951,270) comes due Oct 9, 2027. Unpaid by Apr 10, 2028, it lapses early.
Recent changes
- 2 of the patents on this record were granted since Aug 16, 2026
What they patent
The 5 largest of its 7 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Methods and Systems for Treating Hydrocephalus | 12 in force | to Oct 2035 |
| Systems and Methods for Treating Hydrocephalus (2018) | 8 in force | to May 2040 |
| Apparatus and Methods for Loading an Endovascular Implant into a Delivery Catheter | 2 in force | to Nov 2041 |
| Systems and Methods for Minimally Invasive Drug Delivery to a Subarachnoid Space | 2 in force | to Nov 2039 |
| Systems and Methods for Treating Hydrocephalus (2023) | 1 in force | to Jul 2044 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 9,387,311 | Methods and Systems for Treating Hydrocephalus In force · High confidence | In force | High confidence | |
| US 9,545,505 | Methods and Systems for Treating Hydrocephalus In force · High confidence | In force | High confidence | |
| US 9,662,479 | Methods and Systems for Treating Hydrocephalus In force · High confidence | In force | High confidence | |
| US 9,669,195 | Methods and Systems for Treating Hydrocephalus In force · High confidence | In force | High confidence | |
| US 9,724,501 | Methods and Systems for Treating Hydrocephalus In force · High confidence | In force | High confidence | |
| US 10,058,686 | Methods and Systems for Treating Hydrocephalus In force · High confidence | In force | High confidence | |
| US 10,279,154 | Methods and Systems for Treating Hydrocephalus In force · High confidence | In force | High confidence | |
| US 10,307,576 | Systems and Methods for Deploying an Implant in the Vasculature In force · High confidence | In force | High confidence | |
| US 10,765,846 | Methods and Systems for Draining Cerebrospinal Fluid into the Venous System In force · High confidence | In force | High confidence | |
| US 12,011,557 | Methods and Systems for Draining Cerebrospinal Fluid into the Venous System In force · High confidence | In force | High confidence |
Also on record, not counted in the 27: 8 applications pending · 2 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.