Prosecution Insights
Last updated: August 17, 2026
Application No. 18/565,378

FUEL PUMP

Final Rejection §112
Filed
Nov 29, 2023
Priority
Jul 06, 2021 — JP 2021-112245 +1 more
Examiner
BRANDT, DAVID NELSON
Art Unit
3783
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Mitsubishi Heavy Industries Ltd.
OA Round
4 (Final)
70%
Grant Probability
Favorable
5-6
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 70% — above average
70%
Career Allowance Rate
261 granted / 373 resolved
At TC average
Strong +49% interview lift
Without
With
+49.0%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
64 currently pending
Career history
416
Total Applications
across all art units

Statute-Specific Performance

§101
0.9%
-39.1% vs TC avg
§103
40.8%
+0.8% vs TC avg
§102
19.7%
-20.3% vs TC avg
§112
36.6%
-3.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 373 resolved cases

Office Action

§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 . Response to Amendment The Amendment filed 06/22/2026 has been entered. Claims 1-11 are pending in the application. Claim 3 is withdrawn. Drawings The drawings are objected to under 37 CFR 1.83(a) and/or PCT Article 7, Paragraph (1). The drawings must show every feature of the invention specified in the claims, when they are necessary for the understanding of the invention. Therefore, the following must be shown or the feature(s) canceled from the claim(s). the central position of the plurality of fuel suction channels No new matter should be entered. The drawings are objected to as failing to comply with 37 CFR 1.84(p)(5) because they do not include the following reference sign(s) mentioned in the description: the central position of the plurality of fuel suction channels. It is noted Applicant submitted a new Figure 6 which shows the central portion of the fuel suction channel. However, this does not overcome the objection for two reason. First, a central position is claimed, not a central portion. Second, the 06/22/2026 Figure 6 is not entered for failing to meet PCTG Rules 11.2 and 11.13(a). Applicant should submit a higher quality Figure 6 to overcome the objection. Corrected drawing sheets in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. The figure or figure number of an amended drawing should not be labeled as “amended.” If a drawing figure is to be canceled, the appropriate figure must be removed from the replacement sheet, and where necessary, the remaining figures must be renumbered and appropriate changes made to the brief description of the several views of the drawings for consistency. Additional replacement sheets may be necessary to show the renumbering of the remaining figures. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either “Replacement Sheet” or “New Sheet” pursuant to 37 CFR 1.121(d). If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance. Specification The specification is objected to as failing to provide proper antecedent basis for the claimed subject matter. See 37 CFR 1.75(d)(1) and MPEP § 608.01(o). Correction of the following is required: the central position of the fuel suction channel is not mentioned in the specification. 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 1-2 & 4-11 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. As to Claim 1, the limitation “each of the communication channels are connected to a fuel line from a fuel tank”, in Line 29, is indefinite in light of the preamble. The preamble defines the claimed structure as solely a fuel pump. When referencing instant application Figure 1 and instant application Paragraph 0013, one of ordinary skill would conclude the fuel tank 14 and fuel line L11 is separate from the fuel pump 11. However, the limitation positively claims the fuel tank and fuel line as part of the fuel pump, rendering the scope of the claimed invention indefinite, since the bounds of the fuel pump are not clear. The limitation “each of openings extend from an outer circumferential surface of the suction valve casing through to an inner circumferential surface, and communicate with each of the communication channels at an end portion on the outer circumferential surface side of the openings”, in Lines 36-38, is indefinite. The phrase “each of openings” should read –each of The limitation claims the openings are extending through something, but it is not clear what structure the openings are extending through. The term “an inner circumferential surface” is indefinite for omitting essential structural cooperative relationships of elements, such omission amounting to a gap between the necessary structural connections. See MPEP § 2172.01. For the purpose of examination, the term will be interpreted as an inner circumferential surface of the suction valve casing. The term “the outer circumferential surface side of the openings” lacks antecedent basis. The phrase “the inner peripheral surface side of the openings”, in Line 44, lacks antecedent basis. Response to Arguments Applicant's arguments filed 06/22/2026 have been fully considered but they are not persuasive. Regarding the drawing objections, Applicant submitted poor quality replacement figures, so the drawings were not entered, resulting in the drawing failing to overcome the objections. Even if the drawings were entered, the amendment to the spec and drawings would fail to overcome the objections since the amendments refer to a central portion, not a central position. Regarding the specification objections, Applicant failed to overcome the objection since the amendments refer to a central portion, not a central position. The amendments to the claims resulted in new 112(b) rejections. 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 DAVID BRANDT whose telephone number is (303)297-4776. The examiner can normally be reached Monday-Thursday 10-6, MT. 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, Bhisma Mehta can be reached at (571) 272-3383. 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. /DAVID N BRANDT/ Primary Examiner, Art Unit 3783
Read full office action

Prosecution Timeline

Show 2 earlier events
Sep 29, 2025
Response Filed
Nov 04, 2025
Final Rejection mailed — §112
Feb 04, 2026
Request for Continued Examination
Mar 03, 2026
Response after Non-Final Action
Mar 16, 2026
Examiner Interview (Telephonic)
Mar 19, 2026
Non-Final Rejection mailed — §112
Jun 22, 2026
Response Filed
Jul 23, 2026
Final Rejection mailed — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12704124
POWER END OF RECIPROCATING PUMP WITH FASTENER ASSEMBLY
2y 6m to grant Granted Aug 11, 2026
Patent 12692860
Method for Operating a Construction-Material And/or Viscous-Material Pump for Conveying Construction Material And/or Viscous Material, and Construction-Material And/or Viscous-Material Pump for Conveying Construction Material And/or Viscous Material
3y 7m to grant Granted Jul 28, 2026
Patent 12674452
MODULAR PLUNGER PACKING GLAND ASSEMBLY
3y 9m to grant Granted Jul 07, 2026
Patent 12669128
PUMP UNIT, PUMP SYSTEM, AND PUMP SYSTEM OPERATION METHOD
1y 3m to grant Granted Jun 30, 2026
Patent 12656030
LINEAR COMPRESSOR WITH A SELF-ALIGNED COUPLING
2y 4m to grant Granted Jun 16, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

5-6
Expected OA Rounds
70%
Grant Probability
99%
With Interview (+49.0%)
2y 7m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 373 resolved cases by this examiner. Grant probability derived from career allowance rate.

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