Prosecution Insights
Last updated: May 04, 2026
Application No. 18/953,263

Using Signed Tokens to Verify Short Message Service (SMS) Message Bodies

Non-Final OA §DP
Filed
Nov 20, 2024
Priority
Oct 26, 2020 — provisional 63/105,608 +2 more
Examiner
TABOR, AMARE F
Art Unit
2434
Tech Center
2400 — Computer Networks
Assignee
Proofpoint, Inc.
OA Round
1 (Non-Final)
83%
Grant Probability
Favorable
1-2
OA Rounds
1y 6m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 83% — above average
83%
Career Allowance Rate
683 granted / 825 resolved
+24.8% vs TC avg
Strong +23% interview lift
Without
With
+23.1%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
12 currently pending
Career history
837
Total Applications
across all art units

Statute-Specific Performance

§101
9.2%
-30.8% vs TC avg
§103
56.6%
+16.6% vs TC avg
§102
11.1%
-28.9% vs TC avg
§112
6.3%
-33.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 825 resolved cases

Office Action

§DP
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 . Priority This Application, filed on 11/20/2024 is CON of US Appl. No: 18/374,866 (now USP 12192363 B2); which is CON of US Appl. No: 17/491,771 (now USP 11811932 B2). Claims 1-20 are presented for examination. Double Patenting The non-statutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A non-statutory double patenting rejection is appropriate where the conflicting claims are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on non-statutory double patenting provided the reference application or patent either is shown to be commonly owned with the examined application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. See MPEP § 717.02 for applications subject to examination under the first inventor to file provisions of the AIA as explained in MPEP § 2159. See MPEP § 2146 et seq. for applications not subject to examination under the first inventor to file provisions of the AIA . A terminal disclaimer must be signed in compliance with 37 CFR 1.321(b). The filing of a terminal disclaimer by itself is not a complete reply to a non-statutory double patenting (NSDP) rejection. A complete reply requires that the terminal disclaimer be accompanied by a reply requesting reconsideration of the prior Office action. Even where the NSDP rejection is provisional the reply must be complete. See MPEP § 804, subsection I.B.1. For a reply to a non-final Office action, see 37 CFR 1.111(a). For a reply to final Office action, see 37 CFR 1.113(c). A request for reconsideration while not provided for in 37 CFR 1.113(c) may be filed after final for consideration. See MPEP §§ 706.07(e) and 714.13. The USPTO Internet website contains terminal disclaimer forms which may be used. Please visit www.uspto.gov/patent/patents-forms. The actual filing date of the application in which the form is filed determines what form (e.g., PTO/SB/25, PTO/SB/26, PTO/AIA /25, or PTO/AIA /26) should be used. A web-based eTerminal Disclaimer may be filled out completely online using web-screens. An eTerminal Disclaimer that meets all requirements is auto-processed and approved immediately upon submission. For more information about eTerminal Disclaimers, refer to www.uspto.gov/patents/apply/applying-online/eterminal-disclaimer. Claims 1, 15 & 20 and their dependent claims, at least based on their dependence, are rejected on the ground of non-statutory double patenting as being unpatentable over claims 1, 13 & 20; and 1, 14 & 20 of U.S. Patent Nos. 11811932 B2 and 12192363 B2, respectively. Although the claims at issue are not identical, they are not patentably distinct from each other because all features claimed in the instant applications are found in the patents; i.e., the instant application claims are broader versions of the patented (parent) claims. Please see Claim-Comparison Table (of independent claim 1): Instant Application U.S.P 11811932 B2 U.S.P. 12192363 B2 A computing platform, comprising: at least one processor; a communication interface communicatively coupled to the at least one processor; and memory storing computer-readable instructions that, when executed by the at least one processor, cause the computing platform to: generate a public key and a private key; compute a cryptographic hash of a short message service (SMS) message using the private key; and embed the cryptographic hash in a short message peer-to-peer (SMPP) field of the SMS message, wherein embedding the cryptographic hash in the SMS message configures the SMS message for validation using the cryptographic hash and the public key. A computing platform, comprising: at least one processor; a communication interface communicatively coupled to the at least one processor; and memory storing computer-readable instructions that, when executed by the at least one processor, cause the computing platform to: generate a cryptographic key pair comprising a public key and a private key; publish, to a server, the public key; generate a short message service (SMS) message; sign, using the private key, the SMS message, wherein signing the SMS message comprises computing a cryptographic hash of the SMS message using the private key and embedding the cryptographic hash in a short message peer-to-peer (SMPP) field of the SMS message; and send, to a downstream computing system, the signed SMS message, wherein the downstream computing system is configured to validate the signed SMS message using the cryptographic hash embedded in the SMPP field of the SMS message and by accessing the public key from an internet Domain Name Service (DNS) server of a domain indicated by the computing platform. A computing platform, comprising: at least one processor; a communication interface communicatively coupled to the at least one processor; and memory storing computer-readable instructions that, when executed by the at least one processor, cause the computing platform to: generate a cryptographic key pair comprising a public key and a private key; publish, to a server, the public key; generate a short message service (SMS) message; and sign, using the private key, the SMS message, wherein signing the SMS message comprises computing a cryptographic hash of the SMS message using the private key and embedding the cryptographic hash in a short message peer-to-peer (SMPP) field of the SMS message, and wherein signing the SMS message further configures the SMS message for validation using the cryptographic hash and the public key. Allowable Subject Matter Claims 1-20 will be allowed when the above non-statutory double patenting rejection are overcome (i.e., by filing terminal disclaimer). The following is an examiner’s statement of reasons for allowance: Regarding Claims 1, 15 & 20, With examiner’s thorough search the closest prior arts found are Mardikar (US 8543091 B1) and Lee (US 9426654 B2); wherein Mardikar is directed to systems and methods for secure Short Message Service (SMS) communications. According to an embodiment, a method of providing secure Short Message Service (SMS) communications comprises requesting that SMS data to be sent from a client device to a remote location be encrypted. The method also comprises encrypting the SMS data by processing the SMS data with a Message Authentication Code (MAC) and a timestamp and/or counter along with second factor authentication information. The method further comprises sending the encrypted SMS data to the remote location by a secure SMS application via a regular SMS channel of the client device; and Lee is directed to method for forming a trust relationship among an MNO, an SM, and an eUICC in a communication system in which the SM is defined as an entity for managing the eUICC, as well as to an embedded UICC therefor. However, neither Mardikar et al. nor Lee, either alone or in combination teach or suggest a system that embed cryptographic hash in a short message peer-to-peer (SMPP) field of SMS message, wherein embedding the cryptographic hash in the SMS message configures the SMS message for validation using the cryptographic hash and public key with these and other claim elements as a whole. Claims 2-14, 16-19 are indicated as allowable based on their dependence. Any comments considered necessary by applicant must be submitted no later than the payment of the issue fee and, to avoid processing delays, should preferably accompany the issue fee. Such submissions should be clearly labeled “Comments on Statement of Reasons for Allowance.” Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. (See PTO—892). For example, US 8281120 B2 is directed to Sending Signed E-mail Messages From A Device. Contact Information Any inquiry concerning this communication or earlier communications from the examiner should be directed to AMARE F TABOR whose telephone number is (571) 270-3155. The examiner can normally be reached Mon.—Fri.: 8:00 AM to 5:00 PM. 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, ALI SHAYANFAR can be reached at (571) 270-1050. 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. /AMARE F TABOR/Primary Examiner, Art Unit 2434
Read full office action

Prosecution Timeline

Nov 20, 2024
Application Filed
Feb 21, 2026
Non-Final Rejection — §DP
Apr 17, 2026
Response Filed

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
83%
Grant Probability
99%
With Interview (+23.1%)
3y 0m (~1y 6m remaining)
Median Time to Grant
Low
PTA Risk
Based on 825 resolved cases by this examiner. Grant probability derived from career allowance rate.

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