275 patents currently held

43 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.

1 more record may belong here and awaits a decision; it is not counted.

The next term ends in Apr 2027. from the record

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

Ending by 2030

Apr 2027

Next term end

248

Patent families

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

20262027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045

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

Systems and Methods for Electronic Ticket Validation Using Proximity Detection for Two or More Tickets US 10,127,746

The most cited patent in this portfolio, cited by 126 later US patents, top 5% of utility patents granted in 2018 in our data. Protection runs to 2031. A terminal disclaimer caps this term to an earlier patent's.

Ends Mar 2031 · High confidence Also notable

Display of Non-Linked Eot Units Having an Emergency Status US 7,872,591

Cited by 64 later US patents, top 10% of utility patents granted in 2011 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2029.

Ends Jun 2029 · High confidence Also notable

Railway Train Critical Systems Having Control System Redundancy and Asymmetric Communications Capability US 8,714,494

The largest patent family in this portfolio, 6 related applications, renewed at 3 of 3 maintenance windows. Protection runs to 2032.

Ends Nov 2032 · 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.

5 fees due Jan 9 to 28, 2027 · next Jan 9
6 fees due Feb 1 to 27, 2027 · next Feb 1
2 fees due Mar 10 to 19, 2027 · next Mar 10
3 fees due Apr 22 to 30, 2027 · next Apr 22
2 fees due May 26 to 28, 2027 · next May 26
7 fees due Jun 3 to 26, 2027 · next Jun 3
4 fees due Jul 2 to 19, 2027 · next Jul 2
4 fees due Aug 2 to 27, 2027 · next Aug 2
7 fees due Sep 1 to 26, 2027 · next Sep 1
4 fees due Oct 2 to 30, 2027 · next Oct 2
1 fee due Nov 12, 2027
The maintenance fee for Mounting and Securing Air Conditioner (AC) Unit and Ac Cage Being Wall Mounted on Railway Instrument House (US 10,647,335) comes due Nov 12, 2027. Unpaid by May 12, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

19 of the patents on this record were granted since Aug 17, 2026
6 terms have ended since Aug 17, 2026

What they patent

The 5 largest of its 248 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

System and Method for Trusted Mobile Device Payment	16 in force	to Jun 2037
Railway Train Critical Systems Having Control System Redundancy and Asymmetric Communications Capability	6 in force	to Nov 2032
Method and Apparatus for Bi-Directional Downstream Adjacent Crossing Signaling	3 in force	to Nov 2031
Crossing Gate Mechanism with Integrated Cover or Door Detection Scheme	2 in force	to Jul 2044
Automated Warning Time Inspection at Railroad Grade Crossings on a Given Track Route	2 in force	to Nov 2038

Patents held now

Soonest term end first.

Patent	Title	Status	Expires	Confidence
US 8,087,363	Rail Car Collision System In force Term ends Apr 12, 2027 · High confidence	In force	Term ends Apr 12, 2027	High confidence
US 7,699,271	Adjustable Support for a Railroad Crossing Gate Arm In force Term ends Jul 2, 2027 · High confidence	In force	Term ends Jul 2, 2027	High confidence
US 7,690,314	Rail Car Collision System In force Term ends Oct 31, 2027 · High confidence	In force	Term ends Oct 31, 2027	High confidence
US 7,575,202	Apparatus and Methods for Providing Relatively Constant Warning Time at Highway-Rail Crossings In force Term ends Apr 29, 2028 · High confidence	In force	Term ends Apr 29, 2028	High confidence
US 7,872,591	Display of Non-Linked Eot Units Having an Emergency Status In force Term ends Jun 13, 2029 · High confidence	In force	Term ends Jun 13, 2029	High confidence
US 8,297,558	Crossing Predictor with Authorized Track Speed Input In force Term ends Apr 8, 2030 · High confidence	In force	Term ends Apr 8, 2030	High confidence
US 9,168,935	Vital Speed Profile to Control a Train Moving Along a Track In force Term ends May 16, 2030 · High confidence	In force	Term ends May 16, 2030	High confidence
US D758,216	User Interface for a Grade Crossing Predictor In force Term ends Jun 7, 2030 · High confidence	In force	Term ends Jun 7, 2030	High confidence
US 8,299,811	Universal Front/Back Post Terminal Block and Test Link In force Term ends Jan 10, 2031 · High confidence	In force	Term ends Jan 10, 2031	High confidence
US 8,590,844	Track Circuit Communications In force Term ends Jan 11, 2031 · High confidence	In force	Term ends Jan 11, 2031	High confidence

10 of 275 patents shown.

Pro members see all 275.

Pro members: see all 275 patents

Also on record, not counted in the 275: 43 patents in force now held by others · 68 patents ended · 149 applications pending · 28 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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Siemens Mobility, Inc.