Prosecution Insights
Last updated: July 17, 2026
Application No. 18/435,614

SUBMARINE POWER CABLE WITH FLUID TRANSPORT CAPABILITY

Non-Final OA §103
Filed
Feb 07, 2024
Priority
Feb 20, 2023 — EU 23157544.0
Examiner
NGUYEN, CHAU N
Art Unit
2841
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Nkt Hv Cables AB
OA Round
3 (Non-Final)
68%
Grant Probability
Favorable
3-4
OA Rounds
2m
Est. Remaining
82%
With Interview

Examiner Intelligence

Grants 68% — above average
68%
Career Allowance Rate
1044 granted / 1537 resolved
At TC average
Moderate +14% lift
Without
With
+14.1%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
49 currently pending
Career history
1597
Total Applications
across all art units

Statute-Specific Performance

§103
77.5%
+37.5% vs TC avg
§102
6.8%
-33.2% vs TC avg
§112
5.3%
-34.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1537 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 . 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 (i.e., changing from AIA to pre-AIA ) 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. Claims 12, 15, 16, and 21 are rejected under 35 U.S.C. 103 as being unpatentable over Behrens et al. (SE 1600316) in view of Johanson (EP 3913268). Behrens et al. discloses a method of operating a submarine power cable having a plurality of power cores (15a-15c), each including a conductor and an insulation system arranged around the conductor (page 6, lines 19-21); an outer layer (19) arranged around the power cores; a filler profile (1) having an outer circumferential boundary that includes two inner arcs (5, 7), each receiving a portion of a respective one of the two power cores, and an outer arc (3) which is curved towards the outer layer; and a fluid channel (middle chamber 9) arranged inside the filler profile from one end of the cable to an opposite end of the cable, and wherein the fluid channel extends along the entire length of the filler profile, and wherein the fluid channel (middle chamber 9) is arranged centered relative to the two inner arcs (5, 7) and the outer arc (3), the method comprising transporting electricity by means of the power cores (re-claim 12). Behrens et al. also discloses the filler profile being made of a polymeric material (page 5) (re-claim 21). Behrens et al. does not disclose the insulation system including an inner semiconducting layer arranged around the conductor, an insulation layer arranged around the inner semiconducting layer, and an outer semiconducting layer arranged around the insulation layer; and the method comprising transporting fluid through the fluid channel (re-claim 12). Although not disclosed in the Behrens et al., it would have been obvious to one skilled in the art to provide the insulation system of Behrens et al. with an inner semiconducting layer arranged around the conductor, an insulation layer arranged around the inner semiconducting layer, and an outer semiconducting layer arranged around the insulation layer to meet the specific use of the resulting method since such insulation system is well-known in the art. Johanson discloses a method of operating a submarine power cable comprising transporting fluid through a fluid channel in a filler profile (210) (re- claim 12). Johanson also discloses the fluid being hydrogen gas (re-claim 16). It would have been obvious to one skilled in the art to not only use the cable of Behrens et al. to transport electricity but also transport hydrogen gas through the fluid channel as well, as taught by Johanson, since hydrogen gas plays a vital role in future energy infrastructure. Re-claim 15, it would have been obvious to one skilled in the art to choose a suitable pressure for transporting the fluid in the modified method of Behrens et al. since transporting a fluid with a pressure up to 500 mbar is known in the art, and it has been held that when the general conditions of a claim are disclosed in the prior art, discovering the optimum or workable range involves only routine skill in the art. In re Aller, 105 USPQ 233. Claim 14 is rejected under 35 U.S.C. 103 as being unpatentable over Behrens et al. in view of Johanson et al. as applied to claim 12 above, and further in view of Gidley (4619323). Claim 14 additionally recites performing step a) and b) simultaneously. Gidley discloses a method of operating a power cable, the method comprising: a) transporting electricity by means of a plurality of power cores (15) and b) transporting fluid through a fluid channel (11), wherein step a) and b) are performed simultaneously (col. 4, lines 18-20). It would have been obvious to one skilled in the art to apply the teaching of Gidley when operating the modified power cable of Behrens et al. to transport electricity and fluid at the same time. Response to Arguments Applicant’s arguments with respect to claim 12 have been considered but are moot in view of new ground of rejection. Contact Information Any inquiry concerning this communication or earlier communications from the examiner should be directed to CHAU N NGUYEN whose telephone number is (571)272-1980. The examiner can normally be reached M-Th, 7am to 5:30pm. 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, Imani N Hayman can be reached at 571-270-5528. 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. /CHAU N NGUYEN/Primary Examiner, Art Unit 2841
Read full office action

Prosecution Timeline

Feb 07, 2024
Application Filed
Oct 07, 2025
Non-Final Rejection mailed — §103
Jan 06, 2026
Response Filed
Feb 27, 2026
Final Rejection mailed — §103
Apr 17, 2026
Request for Continued Examination
Apr 27, 2026
Response after Non-Final Action
Jun 23, 2026
Non-Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12683040
CABLE
2y 6m to grant Granted Jul 14, 2026
Patent 12676250
Cable Substitute for Mineral-Insulated Cables in Nuclear Facilities
2y 11m to grant Granted Jul 07, 2026
Patent 12673625
COMPLEX HARNESS
2y 1m to grant Granted Jul 07, 2026
Patent 12671010
BENT UNIT AND GAS-INSULATED TRANSMISSION LINE
1y 7m to grant Granted Jun 30, 2026
Patent 12665103
INSULATED WIRE, COIL USING INSULATED WIRE, VARIABLE-THICKNESS INSULATING TAPE USED IN MANUFACTURE OF INSULATED WIRE, AND MANUFACTURING METHOD OF SAME
3y 9m to grant Granted Jun 23, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

3-4
Expected OA Rounds
68%
Grant Probability
82%
With Interview (+14.1%)
2y 7m (~2m remaining)
Median Time to Grant
High
PTA Risk
Based on 1537 resolved cases by this examiner. Grant probability derived from career allowance rate.

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