Prosecution Insights
Last updated: August 16, 2026
Application No. 18/862,808

HYDRAULIC VALVE APPARATUS

Non-Final OA §102§112
Filed
Nov 04, 2024
Priority
Jul 08, 2022 — JP 2022-110489 +1 more
Examiner
WOOD, DOUGLAS S
Art Unit
Tech Center
Assignee
Komatsu Ltd.
OA Round
1 (Non-Final)
78%
Grant Probability
Favorable
1-2
OA Rounds
6m
Est. Remaining
90%
With Interview

Examiner Intelligence

Grants 78% — above average
78%
Career Allowance Rate
384 granted / 490 resolved
+18.4% vs TC avg
Moderate +11% lift
Without
With
+11.4%
Interview Lift
resolved cases with interview
Typical timeline
2y 3m
Avg Prosecution
26 currently pending
Career history
516
Total Applications
across all art units

Statute-Specific Performance

§101
0.7%
-39.3% vs TC avg
§103
45.0%
+5.0% vs TC avg
§102
44.0%
+4.0% vs TC avg
§112
7.7%
-32.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 490 resolved cases

Office Action

§102 §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 . 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 1-3 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. In Claim 1, line 4, the claim recites the language indicating that a valve apparatus is controlled by operating a spool provided in a valve body. In lines 7 and 9 the elements of Travelling spools and Working equipment spools are described. It is unclear if the spool in line 4 is a singular spool provided in addition to the travelling and Working equipment spools or if the “operating a spool” language is referring to the capabilities provided by the travelling and Working equipment spools described later in the claim. In Claim 1, line 4, the claim recites the language describing a hydraulic device and a hydraulic pump, between which sits a hydraulic valve apparatus. In lines 8 and 10 the elements of two travelling devices and working equipment hydraulic devices are described. It is unclear if the hydraulic device in line 4 is a hydraulic device provided in addition to the travelling and Working hydraulic devices or if the “hydraulic device” language is referring to the travelling and Working hydraulic devices described later in the claim. In Claim 2, line 5, the claim recites the language describing the pump ports being “midway” of the respective pump oil passages. It is unclear what dimensions or distances the limitation “midway” describes in relation to the placement of the pump oil passages and their respective pump ports. Claim Rejections - 35 USC § 102 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 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 the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale or otherwise available to the public before the effective filing date of the claimed invention. Claims 1-3 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Muraoka (U.S. Pub. No. 2019/0285093). Regarding Claim 1, Muraoka discloses a hydraulic valve apparatus that is interposed between a hydraulic device (Muraoka: 121, 122, 123) and a hydraulic pump (Muraoka: 10, 110) and controls supply of oil from the hydraulic pump (Muraoka: 10, 110) to the hydraulic device (Muraoka: 121, 122, 123) by operating a spool provided in a valve body, wherein the valve body includes: Travelling spools (Muraoka: 111, 112) separately provided for two traveling hydraulic devices (Muraoka: 121, 122); Working equipment spools (Muraoka: 113, 114) provided corresponding to working equipment hydraulic devices (Muraoka: 123); and Two pump oil passages (Muraoka: Figure 2: hydraulic lines extending out of 10b and 110b) connected to the hydraulic pump (Muraoka: 10, 110) via pump ports (Muraoka: 10b, 110b); and The two traveling spools (Muraoka: 111, 112) are separately connected to the pump oil passages (Muraoka: Figure 2: hydraulic lines extending out of 10b and 110b) at positions at which distances from the pump ports (Muraoka: 10b, 110b) are equal to each other without passing through other spools (Muraoka: Figure 2: hydraulic lines extending out 10b and 110b mirror each other, without intersecting other spools/valves, until reaching 111 and 112). Regarding Claim 2, Muraoka discloses the hydraulic valve apparatus according to claim 1, wherein: The two pump oil passages (Muraoka: Figure 2: hydraulic lines extending out of 10b and 110b) are provided in the valve body to be parallel to each other (Muraoka: Figure 2: portions of hydraulic lines extending from 10b and 110b are parallel along most of length of each); The pump ports (Muraoka: 10b, 110b) are provided midway of the respective pump oil passages (Muraoka: Figure 2: hydraulic lines extending out of 10b and 110b) (Muraoka: the pump ports and pump oil passages are aligned and fluidly connected and therefore can be considered to be “midway” on one another); and The Working equipment spools (Muraoka: 113, 114) are connected to a portion of the pump oil passages (Muraoka: Figure 2: hydraulic lines extending out of 10b and 110b) and are located on one side of the pump ports (Muraoka: 10b, 110b) and the traveling spools are connected to a portion of the pump oil passages (Muraoka: Figure 2: hydraulic lines extending out of 10b and 110b) and are located on another side of the pump ports (Muraoka: 10b, 110b)(Muraoka: Figure 2: both travelling and working spools are present on both hydraulic/oil lines and their respective sides associated with each pump port). Regarding Claim 3, Muraoka discloses The hydraulic valve apparatus according to claim 1, wherein the two pump oil passages (Muraoka: Figure 2: hydraulic lines extending out of 10b and 110b) are connected to each other via a merging-separating oil passage (Muraoka: Figure 2: hydraulic lines extending from 116 and 117 and merging before extending to 125) including a merging-separating switching valve (Muraoka: 125) at one end portion. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. US 20220298752 (comparable valve arrangement but lacks description or visual representation of symmetry), US 11073171 (comparable valve arrangement but lacks specified travelling spools), US 11713557 (comparable valve arrangement but lacks description or visual representation of symmetry). Any inquiry concerning this communication or earlier communications from the examiner should be directed to DOUGLAS S WOOD whose telephone number is (571)270-5954. The examiner can normally be reached Monday through Thursday 8:30 AM - 7:00 PM 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, Nicole A Coy can be reached at (571) - 272 - 5405. 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. DOUGLAS S. WOOD Examiner Art Unit 3672 /DOUGLAS S WOOD/Examiner, Art Unit 3672 /Nicole Coy/ Supervisory Patent Examiner, Art Unit 3672
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Prosecution Timeline

Nov 04, 2024
Application Filed
Jul 20, 2026
Non-Final Rejection mailed — §102, §112 (current)

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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
78%
Grant Probability
90%
With Interview (+11.4%)
2y 3m (~6m remaining)
Median Time to Grant
Low
PTA Risk
Based on 490 resolved cases by this examiner. Grant probability derived from career allowance rate.

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