Also listed on McDATA Corporation, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Jan 29, 2029 · High confidence
20-year base term ended May 18, 2026
Filed May 18, 2006 as application 11/437,389 · Granted May 31, 2011
Base term plus 987 days of patent term adjustment (USPTO delay)
Today
2006
2029
Clock starts
May 18, 2006
May 18, 2006
Term ends
Jan 29, 2029
Jan 29, 2029
Granted
May 31, 2011
May 31, 2011
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
987
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 987 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 May 18, 2006, when this application, 11/437,389, was filed | May 18, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +987 days, USPTO patent term adjustment record | Jan 29, 2029 | 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 | Jan 29, 2029 | 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 |
|---|---|---|---|
| Jan 29, 2007 Reel 18815, frame 174 | Corwin, Michael; Chamdani, Joseph I.; Trevitt, Stephen | 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
Jan 2029
Term ends Jan 29, 2029. No further fees fall due before then
Note
The 987 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
17
later US patents cite this one
That is above the median of utility patents granted in 2011 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.