42 patents currently held

Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.

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

The next term ends in Nov 2029. from the record

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

Ending by 2030

Nov 2029

Next term end

Patent families

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

2026202720282029 2030 20312032203320342035 2036 2037 2038 2039 2040 20412042204320442045

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

Platform System US 10,640,983

Cited by 26 later US patents, top 10% of utility patents granted in 2020 in our data. Protection runs to 2037.

Ends Mar 2037 · High confidence Also notable

Platform System US 11,447,965

Cited by 10 later US patents, top 25% of utility patents granted in 2022 in our data. Protection runs to 2031.

Ends Jul 2031 · High confidence Also notable

Gangway Having Self-Raising Assembly US 11,254,527

Cited by 5 later US patents, top 25% of utility patents granted in 2022 in our data. Protection runs to 2040.

Ends Jul 2040 · 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 Gate (US 9,032,666) comes due Nov 19, 2026. Unpaid by May 19, 2027, it lapses early.
1 fee due Dec 27, 2026
The maintenance fee for Gangway Having Self-Raising Assembly (US 11,685,618) comes due Dec 27, 2026. Unpaid by Jun 28, 2027, it lapses early.
2 fees due Jan 18 to 23, 2027 · next Jan 18
2 fees due Feb 13 to 28, 2027 · next Feb 13
3 fees due Apr 22 to 29, 2027 · next Apr 22
2 fees due May 5 to 26, 2027 · next May 5
1 fee due Jun 26, 2027
The maintenance fee for Elevating Cage Apparatus with Alternative Powered or Manual Input (US 11,851,303) comes due Jun 26, 2027. Unpaid by Dec 27, 2027, it lapses early.
1 fee due Oct 21, 2027
The maintenance fee for Gate (US 10,626,650) comes due Oct 21, 2027. Unpaid by Apr 21, 2028, it lapses early.
1 fee due Nov 5, 2027
The maintenance fee for Platform System (US 10,640,983) comes due Nov 5, 2027. Unpaid by May 5, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

Nothing was recorded against this company's patents in the last 90 days.

What they patent

The 5 largest of its 20 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Platform System	6 in force	to Mar 2035
Gate	5 in force	to Feb 2033
Gangway Having Self-Raising Assembly	4 in force	to Jul 2040
Mobile Access Unit and Cage	4 in force	to Oct 2031
Gangway Having Hydraulic Position Locking Assembly	3 in force	to Jan 2037

Patents held now

Soonest term end first.

Patent	Title	Status	Expires	Confidence
US 8,046,858	Gangway Handrail and Method for Manufacturing the Same In force Term ends Nov 10, 2029 · High confidence	In force	Term ends Nov 10, 2029	High confidence
US 9,169,693	Mobile Access Unit and Cage In force Term ends Jul 15, 2030 · High confidence	In force	Term ends Jul 15, 2030	High confidence
US 10,450,154	Mobile Access Unit and Cage In force Ends no later than Jul 15, 2030 · Medium confidence	In force	Ends no later than Jul 15, 2030	Medium confidence
US 9,902,577	Mobile Access Unit and Cage In force Term ends Jul 24, 2030 · High confidence	In force	Term ends Jul 24, 2030	High confidence
US 11,447,965	Platform System In force Term ends Jul 16, 2031 · High confidence	In force	Term ends Jul 16, 2031	High confidence
US 11,739,544	Platform System In force Ends no later than Jul 16, 2031 · Medium confidence	In force	Ends no later than Jul 16, 2031	Medium confidence
US 12,534,923	Platform System In force Term ends Jul 16, 2031 · Medium confidence	In force	Term ends Jul 16, 2031	Medium confidence
US 8,387,191	Gangway Bearing Retainer Plate In force Term ends Aug 10, 2031 · High confidence	In force	Term ends Aug 10, 2031	High confidence
US 8,561,239	Articulating Cage In force Term ends Aug 17, 2031 · High confidence	In force	Term ends Aug 17, 2031	High confidence
US 12,600,584	Mobile Access Unit and Cage In force Term ends Oct 28, 2031 · Medium confidence	In force	Term ends Oct 28, 2031	Medium confidence

10 of 42 patents shown.

Pro members see all 42.

Pro members: see all 42 patents

Also on record, not counted in the 42: 6 applications pending · 2 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.

Export every term end as CSV · Pro

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