178 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.
7 more records may belong here and await a decision; they are not counted.
The next term ends in Nov 2026. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
41
Ending by 2030
Nov 2026
Next term end
76
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 May 2028 · High confidence
Also notable
Ends Jan 2028 · High confidence
Also notable
Ends Feb 2031 · Medium confidence
Tissue Access Guidewire System and Method
US 7,857,813
The most cited patent in this portfolio, cited by 1,590 later US patents, top 1% of utility patents granted in 2010 in our data. Protection runs to 2028.
Vertebral Facet Joint Prosthesis and Method of Fixation
US 7,846,183
Cited by 646 later US patents, top 1% of utility patents granted in 2010 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2028.
Vertebral Facet Joint Fusion Implant and Method for Fusion
US 9,271,765
Cited by 199 later US patents, top 5% of utility patents granted in 2016 in our data, and renewed at every maintenance window due so far. Protection runs to 2031.
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.
- 7 fees due Dec 2 to 23, 2026 · next Dec 2
- 3 fees due Jan 9 to 30, 2027 · next Jan 9
- 4 fees due Feb 6 to 18, 2027 · next Feb 6
- 1 fee due Mar 15, 2027The maintenance fee for Transverse Connectors (US 9,131,964) comes due Mar 15, 2027. Unpaid by Sep 15, 2027, it lapses early.
- 4 fees due Apr 1 to 30, 2027 · next Apr 1
- 3 fees due May 10 to 26, 2027 · next May 10
- 1 fee due Jul 5, 2027The maintenance fee for Percutaneous Arthrodesis Method and System (US 9,226,835) comes due Jul 5, 2027. Unpaid by Jan 5, 2028, it lapses early.
- 4 fees due Aug 6 to 27, 2027 · next Aug 6
- 4 fees due Sep 1 to 26, 2027 · next Sep 1
- 1 fee due Oct 5, 2027The maintenance fee for Methods and Apparatus for Stabilizing Bone (US 9,301,786) comes due Oct 5, 2027. Unpaid by Apr 5, 2028, it lapses early.
- 1 fee due Nov 12, 2027The maintenance fee for Expandable Interbody Device (US 10,646,351) comes due Nov 12, 2027. Unpaid by May 12, 2028, it lapses early.
Recent changes
- 3 of the patents on this record were granted since Aug 16, 2026
- 10 terms have ended since Aug 16, 2026
What they patent
The 5 largest of its 76 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Methods and Apparatus for Stabilizing Bone | 14 in force | to Mar 2032 |
| Devices and Methods for Tissue Modification | 11 in force | to Oct 2029 |
| Interbody Bone Implant | 9 in force | to Feb 2038 |
| Devices for Treating the Spine | 6 in force | to Mar 2031 |
| Expandable Interbody Device | 5 in force | to Aug 2035 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,221,397 | Devices and Methods for Tissue Modification In force · High confidence | In force | High confidence | |
| US 7,887,538 | Methods and Apparatus for Tissue Modification In force · Medium confidence | In force | Medium confidence | |
| US 7,553,307 | Devices and Methods for Tissue Modification In force · High confidence | In force | High confidence | |
| US 7,555,343 | Devices and Methods for Selective Surgical Removal of Tissue In force · High confidence | In force | High confidence | |
| US 9,504,583 | Implant and Method for Facet Immobilization In force · High confidence | In force | High confidence | |
| US 8,430,881 | Mechanical Tissue Modification Devices and Methods In force · Medium confidence | In force | Medium confidence | |
| US 8,062,298 | Flexible Tissue Removal Devices and Methods In force · Medium confidence | In force | Medium confidence | |
| US 7,738,968 | Devices and Methods for Selective Surgical Removal of Tissue In force · High confidence | In force | High confidence | |
| US 8,062,300 | Tissue Removal with at Least Partially Flexible Devices In force · Medium confidence | In force | Medium confidence | |
| US 8,048,080 | Flexible Tissue Rasp In force · Medium confidence | In force | Medium confidence |
Also on record, not counted in the 178: 3 patents in force now held by others · 166 patents ended · 14 applications pending · 41 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.