Prosecution Insights
Last updated: April 19, 2026
Application No. 18/511,799

AQUEOUS SOLUTION LEAK DETECTION CABLE

Non-Final OA §103
Filed
Nov 16, 2023
Examiner
MERCADO, ALEXANDER A
Art Unit
2855
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Raymond & Lae Engineering LLC
OA Round
1 (Non-Final)
69%
Grant Probability
Favorable
1-2
OA Rounds
3y 0m
To Grant
89%
With Interview

Examiner Intelligence

Grants 69% — above average
69%
Career Allow Rate
409 granted / 593 resolved
+1.0% vs TC avg
Strong +20% interview lift
Without
With
+19.6%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
35 currently pending
Career history
628
Total Applications
across all art units

Statute-Specific Performance

§101
3.1%
-36.9% vs TC avg
§103
45.1%
+5.1% vs TC avg
§102
16.9%
-23.1% vs TC avg
§112
31.2%
-8.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 593 resolved cases

Office Action

§103
DETAILED ACTION Election/Restrictions Applicant’s election without traverse of Group I and Species 1 in the reply filed on 22 November 2024 is acknowledged. Claims 4 – 6 and 8 – 10 (pertaining to a non-elected species due to the spacers) and Claim 7 (pertaining to a non-elected species due to the conductive aqueous solution reactive polymer) are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected Invention and Species, there being no allowable generic or linking claim. Claim Objections Claim 1 is objected to because of the following informalities: Regarding Claim 1, “an aqueous solution” in the 12th line should read “the aqueous solution” or “said aqueous solution”. Appropriate correction is required. 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(s) 1 and 3 are is/are rejected under 35 U.S.C. 103 as being unpatentable over Raymond (US 2012/0098555), in view of Tausch et al. (WO 90/10208). Citations pertaining to Tausch refer to the attached English translation. Regarding Claim 1, Raymond discloses a leak detection cable, in at least Figures 1A and 1B, comprising: a feedback wire (116, 120) (two separate conductors can be considered a wire e.g. twisted pair wire) (Figure 1B) having feedback conductors (134, 144) and insulators (132, 146) surrounding said feedback conductors (Figure 1B); sensor wires (110, 112) (Figure 1B) disposed adjacent to said insulators and separated by said insulators (Figure 1B), said sensor wires having a uniform resistance per unit of length (wires have a uniform resistance per unit length to some degree); a compressible conductive covering (106) [0031] that surrounds said feedback wire and said sensor wires that is placed over said feedback wire and said sensor wire so that a gap is formed between said compressible conductive covering and said sensor wires (at least gap formed by 108, 114, 118) (Figure 1B); a reactive polymer (104) that expands in the presence of certain fluids that surrounds said compressible conductive covering [0031]; a non-expandable permeable cover (102) [0029] surrounding said reactive polymer that is permeable to an aqueous solution and directs forces from expansion of said reactive polymer [0031], as a result of absorption of said certain fluids, in an inward direction which causes said compressible conductive covering to move inwardly towards said sensor wires and contact said sensor wires to create electrical conduction between said sensor wires where said reactive polymer expands [0031]. Raymond teaches the reactive polymer expands in the presence of hydrocarbons [0022], rather than an aqueous solution. Tausch teaches leakage cables can be modified according to fluid intended to be located by using materials which swell in their presence e.g. silicone in the presence of hydrocarbons and cellulose in the presence of aqueous liquids (Page 4). As such, it would have been obvious to one of ordinary skill in the art before the effective filing date of the applicant’s invention to modify Raymond by replacing the reactive polymer with one that expands in the presence of an aqueous solution e.g. cellulose for the benefit of detecting leakage of aqueous liquids, as taught by Tausch (Page 4). Regarding Claim 3, Raymond discloses said compressible conductive covering comprises a conductive tube (Figure 1A). Claim(s) 2 is/are rejected under 35 U.S.C. 103 as being unpatentable over Raymond (US 2012/0098555), in view of Tausch et al. (WO 90/10208), in further view of McNab (GB 2276766) . Regarding Claim 2, the combination fails to expressly disclose said compressible conductive covering comprises a conductive fabric braid. McNab teaches a compressible conductive covering (2) comprising a conductive fabric braid (Page 2). As such, it would have been obvious to one of ordinary skill in the art before the effective filing date of the applicant’s invention to modify the combination by having the conductive covering comprise a conductive fabric braid for the benefit of an alternative configuration known in the art to enable a compressive conductive covering to complete an electrical connection with a central conductor under force and enable an engineer to map the cable, as taught by McNab (Page 2). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ALEXANDER MERCADO whose telephone number is (571)270-7094. The examiner can normally be reached Monday - Thursday 9am - 4pm EST. 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, Laura Martin can be reached on (571) 272-2160. 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. ALEXANDER A. MERCADO Primary Examiner Art Unit 2855 /ALEXANDER A MERCADO/Primary Examiner, Art Unit 2855
Read full office action

Prosecution Timeline

Nov 16, 2023
Application Filed
Feb 25, 2026
Non-Final Rejection — §103 (current)

Precedent Cases

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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
69%
Grant Probability
89%
With Interview (+19.6%)
3y 0m
Median Time to Grant
Low
PTA Risk
Based on 593 resolved cases by this examiner. Grant probability derived from career allow rate.

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