Prosecution Insights
Last updated: April 19, 2026
Application No. 18/427,750

OIL FILTER-USED APPARATUS

Non-Final OA §103
Filed
Jan 30, 2024
Examiner
THOMAS, DAVID B
Art Unit
3723
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
U-CAR INDUSTRY CO., LTD.
OA Round
1 (Non-Final)
77%
Grant Probability
Favorable
1-2
OA Rounds
2y 7m
To Grant
98%
With Interview

Examiner Intelligence

Grants 77% — above average
77%
Career Allow Rate
1093 granted / 1424 resolved
+6.8% vs TC avg
Strong +21% interview lift
Without
With
+21.3%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
29 currently pending
Career history
1453
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
31.6%
-8.4% vs TC avg
§102
39.5%
-0.5% vs TC avg
§112
19.3%
-20.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1424 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. Claim(s) 1-4 is/are rejected under 35 U.S.C. 103 as being unpatentable over US 5,353,666 A to (Rogers). Regarding claim 1, (Rogers) provides an oil filter wrench, the oil filter wrench comprising a cover (driver adapter 35) for engagement with an external torque tool (via a drive flange 57)(Col. 3, lines 45-51), wherein the cover comprises an annular wall (a generally cylindrical external sidewall 51); and a double-sided reversable collar (wrench body 33) for engagement with oil filter in different size (Col. 3, lines 55-62), wherein one of the sides of the collar 33 is selected for connecting one of the oil filters (an oil filter 13) to the annular wall. PNG media_image1.png 454 473 media_image1.png Greyscale Thus, (Rogers) provides an oil filter-used apparatus according to the claim except for providing only one “collar.” However, the “collar” (wrench body 33) has “a stepped exterior surface 37, a stepped interior surface 39 and an initially open interior 41 which defines a larger aperture (43 in FIG. 3) at one extent 45 thereof for accommodating a first range of sizes of oil filters and a relatively smaller aperture 47 at an opposite extent 49 thereof, the smaller aperture being sized to accommodate a second, different range of sizes of oil filters. Thus, each end of the wrench body can be formed to accommodate different sizes and/or shapes of oil filter canisters.” (Col. 3, lines 30-40) Thus, the “collar” (wrench body 33) is “multiple collars for engagement with oil filter in different size.” Assuming arguendo, alternatively, as (Rogers) provides an oil filter-used apparatus having, inter alia, a “collar” for engaging oil filters of differing sizes, an a “cover” for engagement with an external tool, it would have been obvious to one having ordinary skill in the art at the time of the effective filing date of the invention to provide another, or several additional “collars”, each of which having the same or a different range of oil filter engagement sizes, since it has been held that mere duplication of the essential working parts of a device involves only routine skill in the art. In re Harza, 274 F.2d 669, 124 USPQ 378 (CCPA 1960) Regarding claim 2, in modified (Rogers), the annular wall is inserted in the selected collar in operation (“In the preferred embodiment of FIG. 2, the driver adapter is selectively sized to be matingly engaged within the larger aperture (43 in FIG. 3) of the wrench body 33”; Col. 3, lines 54-57). Regarding claim 3, in modified (Rogers), the annular wall (sidewall 51) comprises at least one boss (external ribs 66), wherein each of the collars comprises at least one recess (mating grooves (68 in Fig. 3) for receiving the at least one boss (Col. 4, lines 21-23). Regarding claim 4, in modified (Rogers), each of the collars comprises at least one boss (e.g., ribs 65 on the wrench body second step portion 59; Col. 4, lines 17-19), wherein the annular wall comprises at least one recess (mating grooves 67 provided in the driver adapter internal sidewalls 53; Col. 4, lines 19-21) for receiving the at least one bosses. Allowable Subject Matter Claim 5 is objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. The following is a statement of reasons for the indication of allowable subject matter: that each of the collars comprises at least one boss, wherein the annular wall comprises at least one L-shaped groove for receiving the at least one boss has neither been disclosed nor suggested by the prior art of record considered as a whole, alone, or in combination. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Numerous oil filter-used devices are described in the prior art. Any inquiry concerning this communication or earlier communications from the examiner should be directed to David B. Thomas whose telephone number is (571) 272-4497. The examiner’s e-mail address is: dave.thomas@uspto.gov. The examiner can normally be reached on Mon-Fri 11:30-7:30. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, David Posigian can be reached on (313) 446-6546. The fax phone number for the organization where this application or proceeding is assigned is (571) 273-8300. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /David B. Thomas/ Primary Examiner, Art Unit 3723 /DBT/
Read full office action

Prosecution Timeline

Jan 30, 2024
Application Filed
Feb 21, 2026
Non-Final Rejection — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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2y 5m to grant Granted Apr 07, 2026
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2y 5m to grant Granted Apr 07, 2026
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2y 5m to grant Granted Mar 31, 2026
Patent 12583082
ENGAGING STRUCTURE FOR HAND TOOL
2y 5m to grant Granted Mar 24, 2026
Patent 12576485
OPEN-ENDED WRENCH WITH POLYMER ADAPTOR
2y 5m to grant Granted Mar 17, 2026
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
77%
Grant Probability
98%
With Interview (+21.3%)
2y 7m
Median Time to Grant
Low
PTA Risk
Based on 1424 resolved cases by this examiner. Grant probability derived from career allow rate.

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