Prosecution Insights
Last updated: April 19, 2026
Application No. 18/798,580

Multi-Protocol Underlay Network Tracing

Non-Final OA §103§112
Filed
Aug 08, 2024
Examiner
CHASE, SHELLY A
Art Unit
2112
Tech Center
2100 — Computer Architecture & Software
Assignee
Cisco Technology Inc.
OA Round
1 (Non-Final)
95%
Grant Probability
Favorable
1-2
OA Rounds
2y 3m
To Grant
98%
With Interview

Examiner Intelligence

Grants 95% — above average
95%
Career Allow Rate
715 granted / 755 resolved
+39.7% vs TC avg
Minimal +3% lift
Without
With
+3.3%
Interview Lift
resolved cases with interview
Typical timeline
2y 3m
Avg Prosecution
17 currently pending
Career history
772
Total Applications
across all art units

Statute-Specific Performance

§101
13.2%
-26.8% vs TC avg
§103
38.2%
-1.8% vs TC avg
§102
15.8%
-24.2% vs TC avg
§112
15.9%
-24.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 755 resolved cases

Office Action

§103 §112
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 . Claims 1 to 20 are presented for examination. Priority Acknowledgment is made of applicant's claim for foreign priority based on an application filed in India on May 3rd, 2024. It is noted, however, that applicant has not filed a certified copy of the 202441035263 application as required by 37 CFR 1.55. Information Disclosure Statement The references listed in the information disclosure statement submitted on 8-8-2024 and 10-28-2025 have been considered by the examiner (see attached PTO-1449). Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 1 to 20 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. The independent clams (1, 18 and 20) recite an indefinite phrase “that supports” creating unclear and not definite claim language as required by 35 CUS 112(b). The claims language are vague and unclear because the claims lack definite claim language and fails to define how the phrase “that supports” is definite. Claims 2 to 17 and 19 are rejected due to their dependency on rejected based claims. Claim Rejections - 35 USC § 103 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. Claim 20 is rejected under 35 U.S.C. 103 as being unpatentable over Monier et al. (USPAP 2020/0007425) in view of Devarajan et al. (USP 11,637,766 . Claim 20: Monier substantially teaches the claimed invention. Monier teaches a method and an apparatus for communicating messages in an IP network, the method comprising: communicating messages through a probe source device and/or tunnel entrance device wherein the tunnel entrance device (104) may send the tunneled IP message downstream to a device and the device downstream may communicate an error message to the tunnel entrance device (see fig. 6 and par. 0091). Monier teaches that the error message may be an ICMPv6 port unreachable packet and may comprise a source address and a destination address (see par. 0092). Monier teaches that a new error message is generated based on an address spoofing method that sets the source address of the new error message to the source address of the downstream device (see par. 0093). Monier teaches that the tunnel entrance device sends the new error message to the probe source device (see par. 0094). Monier fails to specifically teach the limitation of a second network device that supports a second network protocol; however, Devarajan in an analogous art teaches that the message communicated between the client and the application may include an a “Type-Length-Value” (TLV) in the ICMP request and reply (see col. 26, lines 10 to 18). Therefore, it would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to modify the invention of Monier to include the limitation of the ICMP request and reply message to include TLV value because Devarajan teaches that techniques for using traceroute with tunnels includes using TLV in the ICMP messages. This modification would have been obvious because a person of ordinary skill in the art would have been motivated to employ techniques for using TLV in ICMP response and reply messages for communicate data over a network as taught by Devarajan. Allowable Subject Matter Claims 1 to 19 would be allowable once the 112(b) rejection is overcome. The following is a statement of reasons for the indication of allowable subject matter: the prior art made of record, teaches various methods for communicating messages over a network as detailed above; however, fails to teach or fairly suggest or render obvious the combination of elements with the novel element of the instant invention of: “a memory communicatively coupled to the processor, wherein the memory comprises a network tracing logic that is configured to:” “generate an encoding object that comprises the extracted address and transmit the encoding object to a second device that supports a second network protocol” (claim 1). The prior art made of record fails to teach or fairly suggest or render obvious the combination of elements with the novel element of: “a memory communicatively coupled to the processor, wherein the memory comprises a network tracing logic that is configured to:” “obtain the address of the network device from the encoding object” (claim 18). Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Mohan et al. (USPAP 2008/0101241 A1) discloses an Ethernet OAM Frame on a PBT network. Any inquiry concerning this communication or earlier communications from the examiner should be directed to SHELLY A CHASE whose telephone number is (571)272-3816. The examiner can normally be reached Mon-Thu 8:00-5:30, 2nd Friday 8:00-4:30. 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, Albert Decady can be reached at 571-272 3819. 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. /Shelly A Chase/Primary Examiner, Art Unit 2112
Read full office action

Prosecution Timeline

Aug 08, 2024
Application Filed
Dec 27, 2025
Non-Final Rejection — §103, §112
Mar 26, 2026
Examiner Interview Summary
Mar 26, 2026
Applicant Interview (Telephonic)

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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
95%
Grant Probability
98%
With Interview (+3.3%)
2y 3m
Median Time to Grant
Low
PTA Risk
Based on 755 resolved cases by this examiner. Grant probability derived from career allow rate.

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