Prosecution Insights
Last updated: October 25, 2026
Application No. 18/138,455

BLOCKCHAIN LOCKING MECHANISM USING PAPER SHARE CERTIFICATE

Final Rejection §103
Filed
Apr 24, 2023
Priority
Apr 26, 2022 — provisional 63/334,930
Examiner
ASGARI, SIMA
Art Unit
3698
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
Securrency Inc.
OA Round
4 (Final)
27%
Grant Probability
At Risk
5-6
OA Rounds
1y 1m
Est. Remaining
47%
With Interview

Examiner Intelligence

Grants only 27% of cases
27%
Career Allowance Rate
48 granted / 176 resolved
-24.7% vs TC avg
Strong +20% interview lift
Without
With
+19.5%
Interview Lift
resolved cases with interview
Typical timeline
4y 7m
Avg Prosecution
17 currently pending
Career history
199
Total Applications
across all art units

Statute-Specific Performance

§101
22.0%
-18.0% vs TC avg
§103
38.3%
-1.7% vs TC avg
§102
7.5%
-32.5% vs TC avg
§112
30.3%
-9.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 176 resolved cases

Office Action

§103
DETAILED ACTION Notice of Pre-AIA or AIA Status The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Acknowledgment This Action is in response to the amendment filed on July 7, 2026. Claims 1-5 and 8-21 are currently pending, from which claims 13-20 are withdrawn by Applicant’s election. Claims 6-7 have been cancelled by Applicant. Claims 1-5, 8-12 and 21 have been fully examined. Response to Arguments With respect to the 103 rejections, Applicant argues, on page 8 of the remarks, that the bearer token/certified token in Conley is synonymous with a hash-locked account, whereas, in the present invention, the hash-locked account is distinct and separate from the certificate. The examiner respectfully disagrees and notes that “bearer token” and “certified token” are two different terms in Conley. Conley in [0074] discloses that “bearer token” is another term for “hash locked account.” However, according to paragraph [0075] of Conley a “certified token” or a “bearer certificate” can be represented in electronic or non-electronic (paper) format (similar to the claimed certificate) and is equivalent of the claimed token certificate. Applicant further argues that the amendment to claim 1, “wherein the certificate includes a certificate identification corresponding to the locking record,” and that this amendment clearly shows that the certificate is separate and distinct from hash-locked account. The examiner respectfully disagrees and notes that as noted above, the prior art of Conley similar to present Application teaches two different components of bearer token and certified token which are equivalent of the hash-locked account and the token certificate respectively. The examiner further notes that the above claim amendment merely describes content of the certificate and a certificate identification that is not used in any form in the claims. Therefore, the claim amendment indicates non-functional descriptive material that merely describes data and does not further limit the scope of the claim. The examiner further notes that even if the claim amendment is given patentable weight, still Conley in [0075] teaches that the certified token includes a barcode or QR Code that can be interpreted as an identifier of the certificate. Applicant further argues, on page 8 that the claim is amended to recite “providing a platform including a processor and a memory receiving a locking request to lock the digital asset upon issuance of a certificate, wherein the certificate is a paper token certificate or an electronic certificate,” and that cited prior art does not teach this amendment. The examiner respectfully disagrees and notes that the above claim recitation is not a current amendment, but a claim recitation that existed in previous version of the claims. In addition, the examiner notes that Conley, at least in [0074]-[0078] teaches that the creator (i.e. platform) creates a bearer token or a certified token (i.e., certificate) electronically or non-electronically. Conley further in [0081] teaches that the assets associated with created tokens are locked or lockable (i.e., locked upon creating). Applicant further argues that given the certificate of the present invention either triggers the locking mechanism or is issued after the locking mechanism has been triggered shows its separation from the locking mechanism itself. The examiner respectfully notes that, as explained above, the separation of the certificate and locking mechanism is taught by Conley and according to Conley [0074]-[0078] the certified token is created separately from the bearer token or hash-locked account. Applicant assets that both the certificate and the locking mechanism are connected through the certificate identification. The examiner respectfully notes that according to Conley [0080] “certified tokens comprise similar data to BT (i.e., hash locked accounts) therefore, the common content connects the two elements. Applicant further refers to paragraph [0039] form the Specification as showing that inclusion of the certificate as a separate but integral element in conjunction with the locking mechanism helps to bridge the advanced technology benefits of blockchain to less savvy market participants who prefer a tangible physical record of ownership. The examiner notes that the cited paragraph merely describes intended result of the claimed features and is not recited in the claims, and does not need to be taught by the prior art. Applicant further argues, on page 9, that the bearer token described in Conley is a cryptographic equivalent of cash and certified checks, whereas the certificate in the present invention does not have any monetary value. The examiner respectfully disagrees and notes that according to Conley, the tokens “are linked to cryptographically equivalents of cash” ([0074]) (emphasis added) Being linked to monetary value does not imply that the certificate has monetary value. Similarly, Applicant’s certificate is linked to an account which has monetary value. In addition, the examiner notes that whether the certificate has or does not have monetary value is not relevant to the claimed features. Applicant, on page 9, compares the teachings of Conley with paragraph [0041] of the Specification, as a proof that the claimed certificate is different from the certificate of Conley. The examiner respectfully disagrees with the comparison and notes that the prior art is not required to teach the content of the Specification, but the claimed features. If Applicant wants the disclosed features in the Specification to be presented in the claims, Applicant should amend the claims to recite the feature disclosed in the Specification. Claim Rejections - 35 USC § 103 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. The factual inquiries set forth in Graham v. John Deere Co., 383 U.S. 1, 148 USPQ 459 (1966), that are applied for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. Claims 1-5, 8-12 and 21 are rejected under 35 U.S.C. 103 as being unpatentable over Conley et al. (US Patent Application No. 2023/0259923) in view of Kumaraswamy et al. (US Patent Publication No. 2020/0074518.) With respect to claim 1, Conley et al. teach: providing a platform including a processor and a memory receiving a request… lock the digital asset upon request or issuance of a certificate, wherein the certificate is a paper token certificate or an electronic certificate; (the creator (i.e. platform) creates a bearer token or a certified token (i.e., certificate) electronically or non-electronically (i.e., paper or electronic) : [0049], [0074]-[0078], the assets (i.e., digital assets) associated with created tokens are locked or lockable (i.e., locked upon creating/issuance): [0081]) The examiner notes that the claim recitation “lock the digital asset upon request or issuance…” indicates optional language and for a reference to teach the claimed features it is sufficient to teach only one of the options or lock…upon request” or “lock…upon issuance.” the platform implementing locking logic and recording a locking record on a ledger; (hash locked account protocol (i.e., locking logic) is applied: [0056], [0074], [0077]) the platform, upon implementation of the locking logic, minting a non-fungible token (NFT) corresponding to the certificate and transferring the NFT to the digital wallet; (create NFTs: [0376], [0522], [0552]-[0553], NFTs are associated with bearer tokens or certified tokens (i.e., certificates): [0080]-[0083]) wherein the locking logic is operable to prevent execution of functions affecting the digital asset while the digital asset is locked; (hash locked account record prevents transfer of NFT: [0022], claim 1) The examiner notes that the claim recitation “wherein the locking logic is operable to prevent…” indicates intended use of the locking logic and therefore does not further limit the scope of thew claim. The claim limitation indicates “operability” of the locking logic while does not positively recite any functions performed by the locking logic. wherein the locking record is an entry on the ledger…([0030] locking record includes asset identification and a wallet identification; (account record includes identification number, account number: [0136], [0148]-[0165]) The examiner notes that the claim recitation: “locking record includes asset identification and a wallet identification,” indicates non-functional descriptive material and therefore does not further limit the scope of the claim. This is because the asset identification and a wallet identification have not been used by any claimed functions and do not affect any claimed features. wherein the certificate includes a certificate identification corresponding to the locking record, (the certificate includes a bar code or QR code (i.e., identifier) corresponding to the locking record (i.e., locked account): [0075]) The examiner notes that the claim recitation “wherein the certificate includes a certificate identification corresponding to the locking record” merely describes content of the certificate (a certificate identification) that is not used in any form in the claims. Therefore, the claim recitation indicates non-functional descriptive material that merely describes data and does not further limit the scope of the claim. the platform issuing an unlocking key for unlocking the digital asset; (generating pre-image of locking hashes or release hash digest: (i.e., unlocking keys): [0012]-[0013], [0024], [0076]-[0078], [0095]-[0100], [0262], [0335], claim 3) the platform cryptographically hashing the unlocking key to produce a locking hash and recording the locking hash on the locking record; (generating pre-image of locking hashes or release hash digest: [0075]-[0078], [0095]-[0100]) … produce an unlocking code; (pre-images are encoded into QR codes, release hash (unlocking code) : [0075]-[0078], [0095]-[0100]) the platform delivering the unlocking code via the certificate; (the bearer or certified tokens (i.e. certificates) are encoded images such as QR codes and the QR code is provided within the tokens (i.e., via the tokens): [0062], [0075]-[0078]) the platform receiving an unlocking request to unlock the digital asset; (user creates and sends an unlock transaction (i.e., request) [0054], [0167]-[0170]) wherein the unlocking request to unlock the digital asset includes an unlocking key; (the unlock transaction includes the pre-image (i.e., unlocking key): [0167]-[0170]) the platform cryptographically hashing the unlocking key of the unlocking request to produce an unlocking hash; (new hashes are generated: [0259]-[0262]) the platform comparing the unlocking hash to the locking hash on the locking record; (the existing hash is verified against the new hash: [0272]) upon matching the unlocking hash to the locking hash, the platform unlocking the digital asset; (verifies hashes: [0272]-[0275]) wherein unlocking the digital asset causes the locking logic to allow execution of functions affecting the digital asset while the digital asset is unlocked. (unlocking allows transfer: [0332]-[0337]) The examiner notes that the claim recitation “wherein unlocking the digital asset causes the locking logic to allow …” indicates intended use of the unlocking and therefore does not further limit the scope of thew claim. Conley et al. do not explicitly teach: providing a platform including a processor and a memory receiving a locking request to lock the digital asset; the platform asymmetrically encrypting the unlocking key with a public key associated with the digital wallet holding the digital asset… wherein the unlocking code is decryptable with a private key associated with the digital wallet holding the digital asset to produce the unlocking key. However, Kumaraswamy et al. teach: providing a platform including a processor and a memory receiving a locking request to lock the digital asset; (digital data management system (i.e., the platform) locks digital asset based on receiving a request: [0074]) the platform asymmetrically encrypting the unlocking key with a public key associated with the digital wallet holding the digital asset… (the locked asset is digitally signed using a public key: [0079], [0087], [0089]-[0091]) wherein the unlocking code is decryptable with a private key associated with the digital wallet holding the digital asset to produce the unlocking key. (decryption using the private key: [0079], [0087], [0089]-[0091]) The examiner notes that the claim recitation “…the unlocking code is decryptable … to produce …” indicates intended use of the unlocking code and therefore does not further limit the scope of thew claim. Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to incorporate encrypting data associated with a locked asset using a public key, as taught by Kumaraswamy et al., into the system of Conley et al., for locking digital assets, in order to provide data security. (Kumaraswamy et al.: Abstract, [0002]) With respect to claim 2, Conley et al. and Kumaraswamy et al. teach the limitations of claim 1. Moreover, Kumaraswamy et al. teach: wherein the locking logic does not affect execution of functions for additional digital assets in the digital wallet. (Multiple types of digital assets are stored: FIG. 1, [0023], locking is applied on one type of assets: [0073]-[0074] and [0078]-[0079]) The examiner notes that the claim recitation indicates non-functional descriptive material and therefore does not further limit the scope of the claim. Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to incorporate storing and locking multiple types of digital assets, as taught by Kumaraswamy et al., into the system of Conley et al. for locking digital assets, in order to enable applying locking on digital assets separately. (Kumaraswamy et al.: FIG. 1) With respect to claim 3, Conley et al. and Kumaraswamy et al. teach the limitations of claim 1. Moreover, Conley et al. teach: wherein the unlocking key is included in a Quick Response (QR) code. (QR code App: [0062], [0067], bearer tokens of locked accounts can be presented in QR form: [0075], [0095]-[0097]) With respect to claim 4, Conley et al. and Kumaraswamy et al. teach the limitations of claim 1. Moreover, Conley et al. teach: wherein the locking request and/or the unlocking request is received through an Application Programming Interface (API). (devices communicate via interfaces: [0052], [0054], [0517], [0553]) With respect to claim 5, Conley et al. and Kumaraswamy et al. teach the limitations of claim 1. Moreover, Conley et al. teach: wherein the unlocking code is represented by a Quick Response (QR) code. (bearer tokens (i.e., certificates) are encoded using QR codes: [0062], [0075]) With respect to claim 8, Conley et al., and Kumaraswamy et al. teach the limitations of claim 1. Moreover, Kumaraswamy et al. teach: wherein the locking logic is enforced by a locking script, a smart contract, and/or a modified transfer function of a smart contract associated with the digital asset. (execution of a smart contract enforces locking the digital asset: [0078]-[0079], Claims 1-3) Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to incorporate using smart contracts to facilitate digital asset exchange, as taught by Kumaraswamy et al., into the system of Conley et al. for locking digital assets, in order to enforce locking/unlocking of the asset using a smart contract. (Kumaraswamy et al.: Abstract) With respect to claim 9, Conley et al., and Kumaraswamy et al. teach the limitations of claim 1. Moreover, Conley et al. teach: wherein the locking record includes a locking status of the digital asset. (record status: [0148]-[0172], [0356]) With respect to claim 10, Conley et al., and Kumaraswamy et al. teach the limitations of claim 9. Moreover, Conley et al. teach: wherein a smart contract associated with the digital asset include a function to check the locking status of the digital asset prior to executing … functions. (checking record status (recStatus) prior to executing a function. ([0148]-[0172]) Conley et al. do not explicitly teach “smart contract function,” however, a smart contract function or a function of a smart contract can be any function that is included in a smart contract. Therefore, the functions taught by Conley et al. such as “delete record…” (in [0172]) that is executed based on checking the lock status (recStatus) reads on the claim. In addition, Kumaraswamy et al. teach a function of checking status of a transaction: ([0082]) Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to incorporate using smart contracts to facilitate digital asset exchange, as taught by Kumaraswamy et al., into the system of Conley et al. for locking digital assets, in order to enforce locking/unlocking of the asset using a smart contract. (Kumaraswamy et al.: Abstract) With respect to claim 11, Conley et al., and Kumaraswamy et al. teach the limitations of claim 1. Moreover, Conley et al. teach preventing functions while asset is locked (hash locked account record prevents transfer of NFT: [0022]), and if hash verification is successful, unlock transaction is executed: [(claim 1) 0272]-[0275]) Conley et al. and Kumaraswamy et al. do not explicitly teach: preventing execution of functions affecting the digital asset upon comparing the unlocking hash to the locking hash of the locking record and not matching the unlocking hash to the locking hash. However, the claim recitation is logically equivalent of the recitations of claim 1: “the locking logic is operable to prevent execution of functions affecting the digital asset while the digital asset is locked” and “upon matching the unlocking hash to the locking hash, the platform unlocking the digital asset.” With respect to claim 12, Conley et al., and Kumaraswamy et al. teach the limitations of claim 1. Moreover, Conley et al. teach: wherein the ledger includes a Distributed Ledger Technology (DLT), public distributed ledger, a private distributed ledger, and/or a hybrid ledger. ([0045], [0049], [0055]) With respect to claim 21, Conley et al. and Kumaraswamy et al. teach the limitations of claim 1. Moreover, Conley et al. teach: wherein the locking record is issued as a non-fungible-token (NFT) (NFT records are minted:[0376], [0432]-[0433], [0501]) NFTs are transmitted to an operator wallet. ([0258]-[0260]) Pertinent Prior Art The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Zhang (US 2020/0278958,) teaches blockchain interoperability by providing support for locking of assets. Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to SIMA ASGARI whose telephone number is (571)272-2037. The examiner can normally be reached M-F 9am-6pm. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Patrick McAtee can be reached at (571)272-7575. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /SIMA ASGARI/Examiner, Art Unit 3698 /PATRICK MCATEE/Supervisory Patent Examiner, Art Unit 3698
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Prosecution Timeline

Show 1 earlier event
Jun 09, 2025
Non-Final Rejection mailed — §103
Aug 28, 2025
Response Filed
Dec 29, 2025
Final Rejection mailed — §103
Mar 25, 2026
Request for Continued Examination
Apr 02, 2026
Response after Non-Final Action
Apr 10, 2026
Non-Final Rejection mailed — §103
Jul 07, 2026
Response Filed
Oct 01, 2026
Final Rejection mailed — §103 (current)

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Prosecution Projections

5-6
Expected OA Rounds
27%
Grant Probability
47%
With Interview (+19.5%)
4y 7m (~1y 1m remaining)
Median Time to Grant
High
PTA Risk
Based on 176 resolved cases by this examiner. Grant probability derived from career allowance rate.

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