289 patents currently held
100 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.
9 more records may belong here and await a decision; they are not counted.
The next term ends in Dec 2026. from the record
Of the 100 now held by other companies, 38 name West Affum Holdings Dac as their current owner, and 62 more name another party. Each row says which.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
50
Ending by 2030
Dec 2026
Next term end
154
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 Nov 2032 · High confidence
Also notable
Ends Jan 2027 · High confidence
Also notable
Ends Nov 2028 · High confidence
Filter Mechanism for Removing Ecg Artifact from Mechanical Chest Compressions
US 9,084,545
Cited by 103 later US patents, top 5% of utility patents granted in 2015 in our data, and renewed at every maintenance window due so far. Protection runs to 2032. A terminal disclaimer caps this term to an earlier patent's.
Automated Interpretive Medical Care System and Methodology
US 8,147,419
Cited by 178 later US patents, top 5% of utility patents granted in 2012 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2027.
Defibrillator Battery Authentication System
US 7,728,548
Cited by 141 later US patents, top 5% of utility patents granted in 2010 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2028.
Formerly held, still cited
Notable
Ends Feb 2034 · Medium confidence
Cited by 172 later US patents, top 5% of utility patents granted in 2017 in our data, and renewed at every maintenance window due so far. Protection runs to 2034.
conveyed to West Affum Holdings Corp. - now held by West Affum Holdings Dac
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 30, 2026The maintenance fee for CPR Chest Compression Machine Stopping to Detect Patient Recovery (US 11,660,249) comes due Nov 30, 2026. Unpaid by Jun 1, 2027, it lapses early.
- 3 fees due Dec 18 to 30, 2026 · next Dec 18
- 3 fees due Jan 16 to 25, 2027 · next Jan 16
- 4 fees due Feb 6 to 27, 2027 · next Feb 6
- 5 fees due Mar 10 to 24, 2027 · next Mar 10
- 4 fees due Apr 6 to 27, 2027 · next Apr 6
- 6 fees due May 5 to 28, 2027 · next May 5
- 14 fees due Jun 1 to 26, 2027 · next Jun 1
- 1 fee due Jul 9, 2027The maintenance fee for Medical Device with Enhanced Electrocardiogram Channel Selection (US 11,865,351) comes due Jul 9, 2027. Unpaid by Jan 10, 2028, it lapses early.
- 3 fees due Aug 11 to 27, 2027 · next Aug 11
- 8 fees due Sep 5 to 29, 2027 · next Sep 5
- 4 fees due Oct 9 to 28, 2027 · next Oct 9
- 1 fee due Nov 7, 2027The maintenance fee for Devices and Methods for Analyzing Electrocardiogram (ECG) signals for Artifact and Notification of Culprit Electrode (US 11,974,852) comes due Nov 7, 2027. Unpaid by May 8, 2028, it lapses early.
Recent changes
- Sep 29Assignment recorded on 1 record: Alviar, Christopher G. and 10 others to Physio-Control, Inc. Recorded Sep 29, 2026, executed Mar 18, 2021. Conveyance as recorded: Assignment of Assignor's Interest. A recorded assignment is a filed document, not a statement of current ownership. Reel 76605, frame 750.
- Sep 29Assignment recorded on 1 record: Gudapati, Suneethi and 1 other to Physio-Control, Inc. Recorded Sep 29, 2026, executed Aug 30, 2016. Conveyance as recorded: Employee Agreement. A recorded assignment is a filed document, not a statement of current ownership. Reel 76605, frame 821.
- 3 of the patents on this record were granted since Aug 16, 2026
- 2 terms have ended since Aug 16, 2026
What they patent
The 5 largest of its 154 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Filter Mechanism for Removing Ecg Artifact from Mechanical Chest Compressions | 17 in force | to Sep 2034 |
| Peelable Lid for Container with Multi-Point Peel System | 9 in force | to Sep 2041 |
| Intelligent Sync Mode for Defibrillation | 6 in force | to Dec 2035 |
| Variable Sound System for Medical Devices | 6 in force | to Dec 2034 |
| Defibrillator Battery Authentication System | 6 in force | to Mar 2029 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,527,044 | User interface method and apparatus for a medical device In force · High confidence | In force | High confidence | |
| US 8,147,419 | Automated Interpretive Medical Care System and Methodology In force · High confidence | In force | High confidence | |
| US 9,757,578 | Electrocardiogram Monitoring In force · High confidence | In force | High confidence | |
| US 9,636,510 | Defibrillator That Monitors CPR Treatment and Adjusts Protocol In force · High confidence | In force | High confidence | |
| US 9,198,593 | Electrocardiogram Monitoring In force · High confidence | In force | High confidence | |
| US 7,957,798 | Defibrillator/Monitor System Having a Pod with Leads Capable of Wirelessly Communicating In force · High confidence | In force | High confidence | |
| US D680,652 | Reference Sensor for CPR Feedback Device In force · High confidence | In force | High confidence | |
| US 10,406,066 | Integrated External Chest Compression and Defibrillation Devices and Methods of Operation In force · Medium confidence | In force | Medium confidence | |
| US 8,532,755 | Ecg Electrode and Electrode Support In force · High confidence | In force | High confidence | |
| US 8,788,025 | Ecg Electrode and Electrode Support In force · High confidence | In force | High confidence |
Also on record, not counted in the 289: 100 patents in force now held by others · 142 patents ended · 70 applications pending · 84 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.