Prosecution Insights
Last updated: April 19, 2026
Application No. 18/356,277

TOOL RETENTION SYSTEM WITH EXTERNAL LOCKING MECHANSIM

Non-Final OA §103
Filed
Jul 21, 2023
Examiner
MCGOWAN, JAMIE LOUISE
Art Unit
3671
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
Caterpillar Inc.
OA Round
1 (Non-Final)
73%
Grant Probability
Favorable
1-2
OA Rounds
2y 8m
To Grant
89%
With Interview

Examiner Intelligence

Grants 73% — above average
73%
Career Allow Rate
705 granted / 961 resolved
+21.4% vs TC avg
Strong +16% interview lift
Without
With
+15.7%
Interview Lift
resolved cases with interview
Typical timeline
2y 8m
Avg Prosecution
37 currently pending
Career history
998
Total Applications
across all art units

Statute-Specific Performance

§101
0.1%
-39.9% vs TC avg
§103
49.3%
+9.3% vs TC avg
§102
25.9%
-14.1% vs TC avg
§112
14.2%
-25.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 961 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 . 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. 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) 14-15, 17-20 is/are rejected under 35 U.S.C. 103 as being unpatentable over Jura et al. (2020/0378090) in view of Chenoweth et al. (2015/0033595). Regarding claim 14, Jura et al. discloses a tip assembly comprising: An adapter (20) configured to be attached to a work implement, the adapter including: A nose (21) A retaining element (23) A ground engaging tip (30) configured to be attached to the nose (21), the tip including: A nose cavity (35) configured to receive the nose (21), the nose cavity (35) defining a pair of side walls (37) spaced apart from each other A first transverse hole (40) disposed in a first one of the side walls A second transverse hole (not shown) disposed in a second one of the side walls A retention mechanism (50) including: A first spring clip (70) configured to be inserted into the first transverse hole A second spring clip (70) configured to be inserted into the second transverse hole (both retention mechanisms shown in Figure 2) A first retainer (60) configured for insertion into the first transverse hole, the first retainer configured to engage with the pin A second retainer (60) configured for insertion into the second transverse hole, the second retainer configured to engage with the pin (both retention mechanisms shown in Figure 2) While Jura discloses the invention as described above, it fails to specifically disclose a retainer opening in the nose for receiving a retaining pin, but it does disclose that the retaining mechanisms (23) can be replaced with pins and support structures (pgph 0054). Like Jura, Chenoweth also discloses an adapter system for mounting a tooth to a nose for an excavating tool. Unlike Jura, Chenoweth discloses that the posts of the retention mechanism can be replaced with a removable pin. It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to replace the post of Jura with a pin inside a retainer opening in the nose as taught by Chenoweth as a simple substitution of one known element for another to obtain predictable results (KSR International Co. v. Teleflex Inc., 550 USPQ2d 1385 (2007)). Regarding claim 15, the combination discloses that the pin includes an elongated shank (Chenoweth) and a first frustoconical lug extending from one end of the elongated shank and a second frustoconical lug extending from an opposite end fo the elongated shank (Jura – Pgph 0023, 0030). Regarding claim 17, the combination discloses that the pin (Chenoweth) can have various shapes (Jura – pgph 0023) but fails to specifically discloses a non cylindrical cross section. It would have been obvious to one having ordinary skill before the effective filing date of the claimed invention to utilize a non cylindrical pin since a change in the shape of a prior art device is a design consideration within the skill of the art. In re Dailey, 357 F.2d 669, 149 USPQ 47 (CCPA 1966) and Jura specifically discloses that alternate shapes are possible. Regarding claim 18, the combination discloses that each of the first spring clip (70) and the second spring clip (70) includes At least one leg (72) A base portion (74) extending perpendicularly from one edge of the at least one leg A pair of flexible arms (unnumbered extending from opposite ends of the base portion (Figure 6) and configured to engage with the outer surface of the retainer body (Figure 9) A detent portion (77) attached to a distal end of each of the flexible arms An inner surface of the nose cavity includes a cutout (41) configured to receive the at least one leg of a respective one of the first spring clip or the second spring clip Regarding claim 19, Jura discloses a retention mechanism comprising: A retention element (23) A retainer (60) including A retainer body extending from a first axial end to a second axial end (Figure 4) At least one tab (88) extending radially from the retainer body at the first axial end At least one detent cutout (67) disposed on an outer surface of the retainer body An axial cavity (69) at the second axial end configured to receive one end of the retention element (23) (pgph 0050) A spring clip (70) including At least one leg (72) A base portion (74) extending perpendicularly from one edge of the at least one leg A pair of flexible arms (unnumbered extending from opposite ends of the base portion (Figure 6) and configured to engage with the outer surface of the retainer body (Figure 9) A detent portion (77) attached to a distal end of each of the flexible arms, wherein the detent portion is configured to engage with the at least one detent cutout of the retainer While Jura discloses the invention as described above, it fails to specifically disclose a retainer opening in the nose for receiving a retaining pin, but it does disclose that the retaining mechanisms (23) can be replaced with pins and support structures (pgph 0054). Like Jura, Chenoweth also discloses an adapter system for mounting a tooth to a nose for an excavating tool. Unlike Jura, Chenoweth discloses that the posts of the retention mechanism can be replaced with a removable pin. It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to replace the post of Jura with a pin inside a retainer opening in the nose as taught by Chenoweth as a simple substitution of one known element for another to obtain predictable results (KSR International Co. v. Teleflex Inc., 550 USPQ2d 1385 (2007)). Regarding claim 20, the combination discloses that the at least one leg (72) is a bottom leg and the spring clip includes a top leg (see second leg 72 in figure 7) extending from the base portion and spaced apart from the bottom leg. Allowable Subject Matter Claim 16 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. Claims 1-13 are allowed. The retention mechanism including details requiring a spring clip inserted through a first end of a transverse hole while the retainer is inserted through the second end of the transverse hole, the at least one tab on the retainer engaging a female thread in the transverse hole while a detent receives a portion of the spring clip and an axial cavity receiving an end of the pin (as opposed to a post on the adapter) in combination reads over the prior art. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Wood et al. (2022/0333358) discloses a retention mechanism where the multiple parts enter from two sides of a transverse hole. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Jamie L McGowan whose telephone number is (571)272-5064. The examiner can normally be reached Monday through Friday 9:00-5:00 CST. 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, Chris Sebesta can be reached at 571-272-0547. 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. /JAMIE L MCGOWAN/Primary Examiner, Art Unit 3671
Read full office action

Prosecution Timeline

Jul 21, 2023
Application Filed
Jan 06, 2026
Non-Final Rejection — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12599055
APPARATUS, SYSTEM AND METHOD FOR PLANTING
2y 5m to grant Granted Apr 14, 2026
Patent 12601129
SNOWPLOW BLADE EDGE SHOE AND METHODS OF USE
2y 5m to grant Granted Apr 14, 2026
Patent 12590435
TRACTOR ATTACHMENT ACCESSORIES
2y 5m to grant Granted Mar 31, 2026
Patent 12543627
Sowing element for precision agricultural seeders and seeder including element of this kind
2y 5m to grant Granted Feb 10, 2026
Patent 12538856
LAND CULTIVATING SYSTEMS AND METHODS UTILIZING HIGH-PRESSURE FLUID JET CUTTING TECHNIQUES
2y 5m to grant Granted Feb 03, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

AI Strategy Recommendation

Get an AI-powered prosecution strategy using examiner precedents, rejection analysis, and claim mapping.
Powered by AI — typically takes 5-10 seconds

Prosecution Projections

1-2
Expected OA Rounds
73%
Grant Probability
89%
With Interview (+15.7%)
2y 8m
Median Time to Grant
Low
PTA Risk
Based on 961 resolved cases by this examiner. Grant probability derived from career allow rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month