IP Library › Granted Patent US 12,411,993
Granted Patent B2
US 12,411,993 · App. 18/196,114 · Granted Sep 9, 2025

Digital signature system

Inventors: Paul A. Cianci (Farmington, CT); Edgar N. Garcia (Waxhaw, NC)
G06F21/64H04L9/3247G06K19/06037
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Quick Facts
Patent No.
US 12,411,993
App. No.
18/196,114
Filed
May 11, 2023
Granted
Sep 9, 2025
Kind
B2
Art Unit
2494
USPC
713/176
Abstract

The disclosure includes digital signature systems having dynamically validated, multi-level signature seals. A method for leveraging such a system can include receiving a digital signature such as a seal, stamp, or certification. The digital signature can be a digital facsimile of a physical signature, stamp, or seal made on a physical document. Machine-readable code can be attached to the digital signature to direct a user, upon scanning (i.e., via a camera in the physical space) or selecting (i.e., via clicking in the digital space) the code (or seal), to multi-level digital signature data for the digital signature. The multi-level digital signature data includes an artifact that graphically indicates the seal's validation status. A user is directed to the multi-level digital signature data responsive to scanning or selecting the code. The user manually validates or invalidates the digital signature via a user interface configured to display the multi-level digital signature data.

Claims (37)

1. A computer system including one or more processors, a memory, and a bus that couples the one or more processors including the memory to each other, the memory stores one or programs to define a A digital signature system comprising:

a multi-level signature seal comprising:

an attestation for a document made by a conveyor; and

machine-readable code configured to direct a user, upon scanning or selecting the machine-readable code, to a validation portal for the attestation;

the validation portal comprising:

an artifact graphically indicating a current validation status of the attestation; and

a validation link configured to direct the user, upon selection, to multi-level signature data comprising static information that is available in the document, static information that is not available in the document, and dynamic information that is not available in the document; and

a user dashboard configured to allow the conveyor to manually validate and invalidate the attestation.

2. The computer system of claim 1 , wherein the attestation comprises at least one of a seal, a stamp, and a certification made on authority of the conveyor.

3. The computer system of claim 1 , wherein the validation portal further comprises a unique identifier for the multi-level signature seal.

4. The computer system of claim 1 , wherein the validation portal further comprises a single-level digital signature and a link configured to direct the user, upon selection, to a cryptographically protected resource for manually verifying the single-level digital signature.

5. The computer system of claim 4 , wherein the validation portal further comprises at least one multi-level validation statement.

6. The computer system of claim 5 , wherein the at least one multi-level validation statement comprises an affirmation that a private key used for signing documents with the multi-level signature seal is under the conveyor's direct and exclusive control.

7. The computer system of claim 6 , wherein the at least one multi-level validation statement comprises an affirmation that the multi-level signature seal has not been manually invalidated by the conveyor.

8. The computer system of claim 6 , wherein the at least one multi-level validation statement comprises an affirmation that the multi-level signature seal has been manually invalidated by the conveyor.

9. The computer system of claim 8 , wherein the at least one multi-level validation statement further comprises one or more reasons for manually invalidating the multi-level signature seal.

10. The computer system of claim 1 , wherein the machine-readable code comprises a barcode or quick response (QR) code.

11. A computer system including one or more processors, a memory, and a bus that couples the one or more processors including the memory to each other, the memory stores one or programs to define a A multi-level signature seal comprising:

an attestation for a document made by a conveyor; and

machine-readable code configured to direct a user, upon scanning or selecting the machine-readable code, to:

an artifact graphically indicating a current validation status of the attestation; and

multi-level signature data comprising static information that is available in the document, static information that is not available in the document, and dynamic information that is not available in the document.

12. The computer system of claim 11 , wherein the attestation comprises at least one of a seal, a stamp, and a certification made on authority of the conveyor.

13. The computer system of claim 11 , wherein the machine-readable code comprises a barcode or quick response (QR) code.

14. The computer system of claim 11 , wherein the machine-readable code comprises a selectable link.

15. A method comprising:

receiving a document comprising an attestation made by a conveyor; and

attaching machine-readable code to at least one of the document and the attestation, the machine-readable code configured to direct a user, upon scanning the machine-readable code, to:

an artifact graphically indicating a current validation status of the attestation; and

multi-level signature data comprising static information that is available in the document, static information that is not available in the document, and dynamic information that is not available in the document.

16. The method of claim 15 , wherein the attestation comprises at least one of a seal, a stamp, and a certification made on authority of the conveyor.

17. The method of claim 15 , wherein the machine-readable code comprises a barcode or quick response (QR) code.

18. The method of claim 15 , further comprising:

scanning, by a user device of the user, the machine-readable code; and

directing a user interface of the user device to a resource comprising the artifact and the multi-level signature data.

19. The method of claim 18 , further comprising receiving credentials showing that the user is the conveyor.

20. The method of claim 19 , further comprising receiving, from the user, a manual invalidation of the attestation from the user interface of the user device.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 15, 2023
From: CIANCI, PAUL A.; GARCIA, EDGAR N.
To: SEAL PACT, LLC
Reel/Frame 063643/0016 →
Continuity (2)
Provisional Application 63347216 · May 31, 2022
Related Publication 20230388130A1 · Nov 30, 2023
References Cited (37)
US 5652794A · Lepetit et al. · 1997 [cited by applicant]
US 5850219A · Kumomura · 1998 [cited by applicant]
US 6401206B1 · Khan et al. · 2002 [cited by applicant]
US 6907529B1 · Hirose · 2005 [cited by applicant]
US 7380209B2 · Cheng et al. · 2008 [cited by applicant]
US 7523315B2 · Hougaard et al. · 2009 [cited by applicant]
US 7548665B2 · Tredoux · 2009 [cited by applicant]
US 8533480B2 · Pravetz et al. · 2013 [cited by applicant]
US 8560853B2 · De Mello et al. · 2013 [cited by applicant]
US 8924307B2 · Han et al. · 2014 [cited by applicant]
US 11075766B1 · Norton · 2021 [cited by examiner]
US 11186111B1 · Nagelberg · 2021 [cited by examiner]
US 20020129255A1 · Tsuchiyama et al. · 2002 [cited by applicant]
US 20040015699A1 · Thomas et al. · 2004 [cited by applicant]
US 20050125666A1 · Lin · 2005 [cited by applicant]
US 20090006842A1 · Ross · 2009 [cited by examiner]
US 20090006860A1 · Ross · 2009 [cited by applicant]
US 20090031135A1 · Kothandaraman · 2009 [cited by applicant]
US 20150188711A1 · Kirgan et al. · 2015 [cited by applicant]
US 20150356306A1 · Carter · 2015 [cited by applicant]
US 20160068798A1 · Yoon et al. · 2016 [cited by applicant]
US 20160110827A1 · Tweyman et al. · 2016 [cited by applicant]
US 20190068798A1 · Segawa et al. · 2019 [cited by applicant]
US 20190347888A1 · Agbeyo · 2019 [cited by examiner]
US 20210091939A1 · Jabourian · 2021 [cited by examiner]
US 20220014390A1 · Li · 2022 [cited by examiner]
EP 2048867B1 · 2012 [cited by applicant]
WO 2001015382A1 · 2001 [cited by applicant]
WO 2009101478A3 · 2010 [cited by applicant]
WO 2010046864A1 · 2010 [cited by applicant]
WO 2010143001A1 · 2010 [cited by applicant]
WO 2015196256A1 · 2015 [cited by applicant]
Bo et al., “Electronic Seal Based on Hash Function and Digital Watermark.” IEEE (2009): pp. 28-31. [cited by applicant]
Jian, Xu, and Ma Bin. “Digital watermark for document electronic seal system based on DCT technology.” IEEE. vol. 2. (2011): pp. 5-8. [cited by applicant]
Park et al., “Visible watermarking using verifiable digital seal image.” SCIS (2001): 7 pages. [cited by applicant]
Qu et al., “A New Approach for Digital Signature Based on Digital Seal.” IISA, Academy Publisher (2009): p. 456-459. [cited by applicant]
Yu et al., “Dual function seal:visualized digital signature for electronic medical record systems.” J Med Sys 36.5 (2012): 3115-3121. [cited by applicant]