Also listed on Dbtel Incorporated, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Nov 28, 2026 · High confidence
20-year base term ended Jul 27, 2025
Held by Industrial Technology Research Institute, Richip Incorporated, C-One Technology Corp., Carry Computer Engineering Co., Ltd., Asustek Computer Incorporated and Dbtel Incorporated
Filed Jul 27, 2005 as application 11/190,233 · Granted Oct 20, 2009
Base term plus 489 days of patent term adjustment (USPTO delay)
Today
2005
2026
Clock starts
Jul 27, 2005
Jul 27, 2005
Term ends
Nov 28, 2026
Nov 28, 2026
Granted
Oct 20, 2009
Oct 20, 2009
base term
patent term adjustment
fee events
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
489
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
3 of 3
Maintenance fees paid
Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.
This patent's term runs 489 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. Confidence: High. from the record
How we calculated this date
One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Jul 27, 2005, when this application, 11/190,233, was filed | Jul 27, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +489 days, USPTO patent term adjustment record | Nov 28, 2026 | High confidence |
| Terminal disclaimer cap | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Nov 28, 2026 | High confidence |
Assignments
Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| Oct 28, 2005 Reel 16697, frame 784 | Lin, Chanson; Liu, Chih-yuan; Lee, Chung Liang; Yu, Gordon | Richip Incorporated; Carry Computer Eng. Co., Ltd.; Industrial Technology Research Institute; Asustek Computer Incorporated; Dbtel Incorporated; Power Digital Card Co., Ltd.; C-One Technology Corp. | Assignment of Assignor's Interest |
| Oct 28, 2005 reel/frame not recorded | Lee, Chung Liang; Lin, Chanson; Liu, Chih-yuan; Yu, Gordon | Richip Incorporated | Assignment of Assignor's Interest |
| Oct 28, 2005 reel/frame not recorded | Lee, Chung Liang; Lin, Chanson; Liu, Chih-yuan; Yu, Gordon | Carry Computer Eng. Co., Ltd. | Assignment of Assignor's Interest |
| Oct 28, 2005 reel/frame not recorded | Lee, Chung Liang; Lin, Chanson; Liu, Chih-yuan; Yu, Gordon | Industrial Technology Research Institute | Assignment of Assignor's Interest |
| Oct 28, 2005 reel/frame not recorded | Lee, Chung Liang; Lin, Chanson; Liu, Chih-yuan; Yu, Gordon | Asustek Computer Incorporated | Assignment of Assignor's Interest |
| Oct 28, 2005 reel/frame not recorded | Lee, Chung Liang; Lin, Chanson; Liu, Chih-yuan; Yu, Gordon | Dbtel Incorporated | Assignment of Assignor's Interest |
| Oct 28, 2005 reel/frame not recorded | Lee, Chung Liang; Lin, Chanson; Liu, Chih-yuan; Yu, Gordon | Power Digital Card Co., Ltd. | Assignment of Assignor's Interest |
| Oct 28, 2005 reel/frame not recorded | Lee, Chung Liang; Lin, Chanson; Liu, Chih-yuan; Yu, Gordon | C-One Technology Corp. | Assignment of Assignor's Interest |
| Dec 17, 2010 Reel 25517, frame 231 | Power Digital Card Co., Ltd. | Industrial Technology Research Institute; Richip Incorporated; C-One Technology Corp.; Carry Computer Engineering Co., Ltd.; Asustek Computer Incorporated; Dbtel Incorporated | Assignment of Assignor's Interest |
| Dec 17, 2010 reel/frame not recorded | Power Digital Card Co., Ltd. | Industrial Technology Research Institute | Assignment of Assignor's Interest |
| Dec 17, 2010 reel/frame not recorded | Power Digital Card Co., Ltd. | Richip Incorporated | Assignment of Assignor's Interest |
| Dec 17, 2010 reel/frame not recorded | Power Digital Card Co., Ltd. | C-One Technology Corp. | Assignment of Assignor's Interest |
| Dec 17, 2010 reel/frame not recorded | Power Digital Card Co., Ltd. | Carry Computer Engineering Co., Ltd. | Assignment of Assignor's Interest |
| Dec 17, 2010 reel/frame not recorded | Power Digital Card Co., Ltd. | Asustek Computer Incorporated | Assignment of Assignor's Interest |
| Dec 17, 2010 reel/frame not recorded | Power Digital Card Co., Ltd. | Dbtel Incorporated | Assignment of Assignor's Interest |
| Nov 30, 2017 Reel 44579, frame 474 | Power Digital Card Co., Ltd. | Industrial Technology Research Institute; Richip Incorporated; C-One Technology Corp.; Carry Computer Eng. Co., Ltd.; Asustek Computer Incorporated; Dbtel Incorporated | Corrective Assignment to Correct the Assignee Address Previously Recorded on Reel 025517 Frame 0231. Assignor(S) Hereby Confirms the Assignment of Assignors Interest. |
| Nov 30, 2017 reel/frame not recorded | Power Digital Card Co., Ltd. | Industrial Technology Research Institute | Corrective Assignment to Correct the Assignee Address Previously Recorded on Reel 025517 Frame 0231. Assignor(S) Hereby Confirms the Assignment of Assignors Interest. |
| Nov 30, 2017 reel/frame not recorded | Power Digital Card Co., Ltd. | Richip Incorporated | Corrective Assignment to Correct the Assignee Address Previously Recorded on Reel 025517 Frame 0231. Assignor(S) Hereby Confirms the Assignment of Assignors Interest. |
| Nov 30, 2017 reel/frame not recorded | Power Digital Card Co., Ltd. | C-One Technology Corp. | Corrective Assignment to Correct the Assignee Address Previously Recorded on Reel 025517 Frame 0231. Assignor(S) Hereby Confirms the Assignment of Assignors Interest. |
| Nov 30, 2017 reel/frame not recorded | Power Digital Card Co., Ltd. | Carry Computer Eng. Co., Ltd. | Corrective Assignment to Correct the Assignee Address Previously Recorded on Reel 025517 Frame 0231. Assignor(S) Hereby Confirms the Assignment of Assignors Interest. |
| Nov 30, 2017 reel/frame not recorded | Power Digital Card Co., Ltd. | Asustek Computer Incorporated | Corrective Assignment to Correct the Assignee Address Previously Recorded on Reel 025517 Frame 0231. Assignor(S) Hereby Confirms the Assignment of Assignors Interest. |
| Nov 30, 2017 reel/frame not recorded | Power Digital Card Co., Ltd. | Dbtel Incorporated | Corrective Assignment to Correct the Assignee Address Previously Recorded on Reel 025517 Frame 0231. Assignor(S) Hereby Confirms the Assignment of Assignors Interest. |
Sources
Google Patents · The patent document at USPTO · Assignment records at USPTO
USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup
Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Nov 2026
Term ends Nov 28, 2026. No further fees fall due before then
Note
The 489 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
14
later US patents cite this one
That is above the median of utility patents granted in 2009 in our data, the only group it is compared against.
How we rank
Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.