Also listed on McDATA Corporation, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Jun 28, 2031 · High confidence
20-year base term ended Sep 29, 2025
Filed Sep 29, 2005 as application 11/239,954 · Granted Sep 22, 2015
Base term plus 2098 days of patent term adjustment (USPTO delay)
Today
2005
2031
Clock starts
Sep 29, 2005
Sep 29, 2005
Term ends
Jun 28, 2031
Jun 28, 2031
Granted
Sep 22, 2015
Sep 22, 2015
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
2,098
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 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.
3
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
This patent's term runs 2098 days past its 20-year base term on prosecution delay. 2 of 3 maintenance fees are paid so far. 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 Sep 29, 2005, when this application, 11/239,954, was filed | Sep 29, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +2098 days, USPTO patent term adjustment record | Jun 28, 2031 | 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 | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Jun 28, 2031 | High confidence |
This family
| US 9,143,841 | this patent Jun 2031 | Jun 2031 |
| US 9,661,085 | Lapsed on the fee record May 2025 | May 2025 |
| US 10,361,903 | Lapsed on the fee record Jul 2023 | Jul 2023 |
The applications whose file history this site holds. The family may have others.
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 |
|---|---|---|---|
| Sep 29, 2005 Reel 17066, frame 308 | Chamdani, Joseph I.; Ramkumar, Gurumurthy D.; Younglove, Bruce L.; Hill, Corey R. | McDATA Corporation | Assignment of Assignor's Interest |
| Nov 23, 2005 Reel 17058, frame 296 | Chamdani, Joseph I.; Ramkumar, Gurumurthy D.; Younglove, Bruce L.; Hill, Corey R. | McDATA Corporation | Assignment of Assignor's Interest |
| Dec 22, 2008 Reel 22012, frame 204 | Brocade Communications Systems, Inc.; Foundry Networks, Inc.; Inrange Technologies Corporation; McDATA Corporation | Bank of America, N.A. as Administrative Agent | Security Agreement |
| Jan 20, 2010 Reel 23814, frame 587 | Brocade Communications Systems, Inc.; Foundry Networks, LLC; Inrange Technologies Corporation; McDATA Corporation; McDATA Services Corporation | Wells Fargo Bank, National Association, as Collateral Agent | Security Agreement |
| Dec 17, 2012 Reel 29486, frame 74 | McDATA Corporation | Brocade Communications Systems, Inc. | Assignment of Assignor's Interest |
| Jan 21, 2015 Reel 34792, frame 540 | Bank of America, N.A., as Administrative Agent | Brocade Communications Systems, Inc.; Inrange Technologies Corporation; Foundry Networks, LLC | Release of Security Interest |
| Jan 21, 2015 reel/frame not recorded | Bank of America, N.A., as Administrative Agent | Brocade Communications Systems, Inc. | Release of Security Interest |
| Jan 21, 2015 reel/frame not recorded | Bank of America, N.A., as Administrative Agent | Inrange Technologies Corporation | Release of Security Interest |
| Jan 21, 2015 reel/frame not recorded | Bank of America, N.A., as Administrative Agent | Foundry Networks, LLC | Release of Security Interest |
| Jan 22, 2015 Reel 34804, frame 793 | Wells Fargo Bank, National Association, as Collateral Agent | Brocade Communications Systems, Inc.; Foundry Networks, LLC | Release of Security Interest |
| Jan 22, 2015 reel/frame not recorded | Wells Fargo Bank, National Association, as Collateral Agent | Brocade Communications Systems, Inc. | Release of Security Interest |
| Jan 22, 2015 reel/frame not recorded | Wells Fargo Bank, National Association, as Collateral Agent | Foundry Networks, LLC | Release of Security Interest |
| Dec 13, 2017 Reel 44891, frame 536 | Brocade Communications Systems, Inc. | Brocade Communications Systems LLC | Change of Name |
| Oct 18, 2018 Reel 47270, frame 247 | Brocade Communications Systems LLC | Avago Technologies International Sales Pte. Limited | Assignment of Assignor's 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
Jun 2031
Term ends Jun 28, 2031. Maintenance fees still fall due before then
Note
The 2098 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
95
later US patents cite this one
That is top 5% of utility patents granted in 2015 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.