104 patents currently held

2 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.

3 more records may belong here and await a decision; they are not counted.

The next term ends in Dec 2026. from the record

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

Ending by 2030

Dec 2026

Next term end

Patent families

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 20442045

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

Expandable Interbody Devices US 11,278,423

Cited by 61 later US patents, top 1% of utility patents granted in 2022 in our data. Protection runs to 2039.

Ends Jun 2039 · High confidence Also notable

Improved Metal Alloys for Medical Devices US 11,266,767

Cited by 35 later US patents, top 5% of utility patents granted in 2022 in our data. Protection runs to 2036.

Ends Apr 2036 · High confidence Also notable

Interbody Lattice Structure US 11,576,788

Cited by 13 later US patents, top 5% of utility patents granted in 2023 in our data. Protection runs to 2040.

Ends Mar 2040 · Medium confidence

Formerly held, still cited

Notable

Polyconjugates for in Vivo Delivery of Polynucleotides US 8,137,695

The most cited patent in this portfolio, cited by 130 later US patents, top 5% of utility patents granted in 2012 in our data. Protection runs to 2027.

now held by Arrowhead Pharmaceuticals, Inc.

Ends Aug 2027 · 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 Nov 19, 2026
The maintenance fee for Method for Forming a Tubular Medical Device (US 9,034,245) comes due Nov 19, 2026. Unpaid by May 19, 2027, it lapses early.
1 fee due Feb 28, 2027
The maintenance fee for Cationic Cyclic Amine and Amphipathic Transfection Reagents (US 11,739,174) comes due Feb 28, 2027. Unpaid by Aug 30, 2027, it lapses early.
1 fee due Mar 26, 2027
The maintenance fee for Stent Device For Spinal Fusion (US 11,766,506) comes due Mar 26, 2027. Unpaid by Sep 27, 2027, it lapses early.
2 fees due Apr 10 to 17, 2027 · next Apr 10
1 fee due Jun 10, 2027
The maintenance fee for Bone Fixation Screw with Deployable Anchors (US 10,499,969) comes due Jun 10, 2027. Unpaid by Dec 10, 2027, it lapses early.
1 fee due Jul 30, 2027
The maintenance fee for Expandable Interbody Devices (US 11,883,301) comes due Jul 30, 2027. Unpaid by Jan 31, 2028, it lapses early.
2 fees due Aug 13 to 27, 2027 · next Aug 13
1 fee due Sep 22, 2027
The maintenance fee for Transfection Compositions using Amphipathic Compounds (US 9,290,779) comes due Sep 22, 2027. Unpaid by Mar 22, 2028, it lapses early.
2 fees due Oct 14 to 16, 2027 · next Oct 14

Which patents, and when each one lapses · Pro

Recent changes

11 of the patents on this record were granted since Aug 16, 2026

What they patent

The 5 largest of its 53 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Improved Metal Alloys for Medical Devices	7 in force	to Jan 2042
Spinal Cage Device, System, and Methods of Assembly and Use	7 in force	to Jun 2038
Expandable Interbody Devices	5 in force	to Aug 2041
Spinal Implant	5 in force	to Mar 2040
Metal Alloy for a Stent	5 in force	to Jul 2027

Patents held now

Soonest term end first.

Patent	Title	Status	Expires	Confidence
US 7,488,444	Metal Alloys for Medical Devices In force Ends no later than Dec 5, 2026 · Medium confidence	In force	Ends no later than Dec 5, 2026	Medium confidence
US 7,540,994	Process for Forming an Improved Metal Alloy Stent In force Ends no later than Jan 2, 2027 · Medium confidence	In force	Ends no later than Jan 2, 2027	Medium confidence
US 7,452,502	Metal Alloy for a Stent In force Ends no later than Jan 9, 2027 · Medium confidence	In force	Ends no later than Jan 9, 2027	Medium confidence
US 7,452,501	Metal Alloy for a Stent In force Ends no later than Jan 10, 2027 · Medium confidence	In force	Ends no later than Jan 10, 2027	Medium confidence
US 8,808,618	Process for Forming an Improved Metal Alloy Stent In force Ends no later than Jul 8, 2027 · Medium confidence	In force	Ends no later than Jul 8, 2027	Medium confidence
US 8,540,720	System, Instrumentation and Method for Spinal Fixation Using Minimally Invasive Surgical Techiques In force Term ends Dec 12, 2028 · Medium confidence	In force	Term ends Dec 12, 2028	Medium confidence
US 9,433,447	Instrumentation for Spinal Fixation Using Minimally Invasive Surgical Techniques In force (reinstated) Term ends Jan 5, 2029 · Medium confidence	In force (reinstated)	Term ends Jan 5, 2029	Medium confidence
US 9,526,554	System, instrumentation and method for spinal fixation using minimally invasive surgical techiques In force Term ends Feb 20, 2029 · Medium confidence	In force	Term ends Feb 20, 2029	Medium confidence
US 8,247,728	Apparatus and Method for Bonding Refractory Metals In force Term ends Apr 17, 2029 · High confidence	In force	Term ends Apr 17, 2029	High confidence
US 8,921,448	Transfection Compositions Using Amphipathic Compounds held by Mirus Bio LLC In force Term ends Jul 16, 2030 · High confidence	In force	Term ends Jul 16, 2030	High confidence

10 of 104 patents shown.

Pro members see all 104.

Pro members: see all 104 patents

Also on record, not counted in the 104: 2 patents in force now held by others · 76 patents ended · 84 applications pending · 75 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.

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