54 patents currently held
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
The next term ends in May 2027. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
17
Ending by 2030
May 2027
Next term end
46
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 15, 2026 · includes USPTO assignment & status data published Nov 15, 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 Aug 2028 · High confidence
Also notable
Ends Jun 2027 · High confidence
Also notable
Ends Nov 2027 · High confidence
Radiation Therapy Apparatus with Selective Shielding Capability
US 7,686,755
The most cited patent in this portfolio, cited by 40 later US patents, top 25% of utility patents granted in 2010 in our data. Protection runs to 2028.
Method and Apparatus for Determining the Position of a Surgical Tool Relative to a Target Volume Inside an Animal Body
US 8,105,238
Cited by 30 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 2027.
Customized Gynecological Brachytherapy Applicator and Method
US 7,678,040
Renewed at every maintenance window since the 2010 grant; no more fees are due before its term ends in 2027.
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, 2026The maintenance fee for Mobile X-Ray Unit (US 9,036,787) comes due Nov 19, 2026. Unpaid by May 19, 2027, it lapses early.
- 1 fee due Dec 16, 2026The maintenance fee for Proportional Attenuation of Radiation in Brachytheraphy Treatment (US 9,055,972) comes due Dec 16, 2026. Unpaid by Jun 16, 2027, it lapses early.
- 1 fee due Mar 15, 2027The maintenance fee for Brachytherapy applicator device for insertion in a body cavity (US 9,132,282) comes due Mar 15, 2027. Unpaid by Sep 15, 2027, it lapses early.
- 1 fee due Aug 16, 2027The maintenance fee for Mobile X-Ray Unit (US 9,259,596) comes due Aug 16, 2027. Unpaid by Feb 16, 2028, it lapses early.
- 1 fee due Sep 24, 2027The maintenance fee for Advanced Applicator Systems and Methods (US 10,596,390) comes due Sep 24, 2027. Unpaid by Mar 24, 2028, it lapses early.
Recent changes
Nothing was recorded against this company's patents in the last 90 days.
What they patent
The 5 largest of its 46 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Pair of Left and Right Brachytherapy Ovoids | 2 in force | to Oct 2037 |
| Mobile X-Ray Unit (2011) | 2 in force | to Aug 2032 |
| Brachytherapy applicator device for insertion in a body cavity | 2 in force | to Feb 2032 |
| Mobile X-Ray Unit (2011) | 2 in force | to Dec 2031 |
| Apparatus and Methods for Radiation Treatment of Tissue Surfaces | 2 in force | to Aug 2031 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,033,980 | Method for Locating a Source in a Body In force · High confidence | In force | High confidence | |
| US 8,105,238 | Method and Apparatus for Determining the Position of a Surgical Tool Relative to a Target Volume Inside an Animal Body In force · High confidence | In force | High confidence | |
| US 7,726,318 | Radiation Blocking Patch for Radio-Therapy In force · High confidence | In force | High confidence | |
| US 8,162,884 | Apparatus for Introducing Catheters or Needles into a Body Part In force · High confidence | In force | High confidence | |
| US 7,744,521 | Customized Gynecological Brachytherapy Applicator and Method In force · Medium confidence | In force | Medium confidence | |
| US 7,678,040 | Customized Gynecological Brachytherapy Applicator and Method In force · High confidence | In force | High confidence | |
| US 7,815,561 | Brachytherapy Applicator In force · High confidence | In force | High confidence | |
| US 9,055,972 | Proportional Attenuation of Radiation in Brachytheraphy Treatment In force · High confidence | In force | High confidence | |
| US 7,727,137 | Balloon Brachytherapy Applicator and Method In force · High confidence | In force | High confidence | |
| US 8,062,203 | Proportional Attenuation of Radiation in Brachytherapy Treatment In force · High confidence | In force | High confidence |
Also on record, not counted in the 54: 51 patents ended · 5 applications pending · 5 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.