Composition Exhibiting a von Willebrand Factor (vWF) Protease Activity Comprising a Polypeptide Chain with the Amino Acid Sequence AAGGILHLELLV

US 8,703,426 Term ended

Overview Sources & methods

Term ended no later than Feb 7, 2023 · Low confidence

Computed 20-year base term

USPTO later recorded it as expired for non-payment on May 25, 2026.

Held by Baxalta Innovations GmbH

Filed Feb 15, 2008 as application 12/032,553 · Granted Apr 22, 2014

Base term plus 807 days of patent term adjustment (USPTO delay)

Today

20 years from filing

Ended no later than Feb 7, 2023

2000 2026

Clock starts
Nov 22, 2000

Ended no later than
Feb 7, 2023

Granted
Apr 22, 2014

base term patent term adjustment after the term ends 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

807

Days of term adjustment

Read from the USPTO patent term adjustment record, not recalculated here.

Unresolved

Terminal disclaimer

On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.

2 of 2

Maintenance fees paid

Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.

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 Nov 22, 2000, when the earliest non-provisional application in its chain was filed (this one was filed Feb 15, 2008); a parent in its chain could not be resolved (the next row)	Nov 22, 2020	High confidence
Continuity chain	A parent in the chain could not be resolved	dated from this application's own claim	Medium confidence
Patent term adjustment	+807 days, USPTO patent term adjustment record	Feb 7, 2023	High confidence
Terminal disclaimer cap	Disclaimer on file (approved), reference document not resolved	no cap applied, and none guessed	Medium confidence
Patent term extension	None on file	no change	High confidence
Fee events	2 of 2 maintenance fees paid	term ended	High confidence
USPTO status record	Recorded as expired for non-payment on May 25, 2026, after the term ended	no change	High confidence
Computed term end	The steps above, in order	no later than Feb 7, 2023	Low confidence

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.

Not on this page: the patent's family, its recorded assignments and its citation count. USPTO's assignment records, linked above, list every recorded assignment.

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

This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. Related patents and pending applications may cover overlapping subject matter.

Composition Exhibiting a von Willebrand Factor (vWF) Protease Activity Comprising a Polypeptide Chain with the Amino Acid Sequence AAGGILHLELLV

Term ended no later than Feb 7, 2023 · Low confidence

20-year base term ended Nov 22, 2020

How we calculated this date

Sources