Prosecution Insights
Last updated: May 29, 2026
Application No. 18/407,755

Golf Club Head with High Density Body and Low Density Face

Non-Final OA §103
Filed
Jan 09, 2024
Priority
May 22, 2015 — provisional 62/165,712 +5 more
Examiner
HUNTER, ALVIN A
Art Unit
3711
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Karsten Manufacturing Corporation
OA Round
3 (Non-Final)
86%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
88%
With Interview

Examiner Intelligence

Grants 86% — above average
86%
Career Allowance Rate
1131 granted / 1319 resolved
+15.7% vs TC avg
Minimal +3% lift
Without
With
+2.8%
Interview Lift
resolved cases with interview
Fast prosecutor
2y 1m
Avg Prosecution
22 currently pending
Career history
1351
Total Applications
across all art units

Statute-Specific Performance

§101
1.3%
-38.7% vs TC avg
§103
60.3%
+20.3% vs TC avg
§102
7.2%
-32.8% vs TC avg
§112
5.0%
-35.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1319 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 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) 1-12, 14-15, and 17 is/are rejected under 35 U.S.C. 103 as being unpatentable over Wang et al. (US 2007/0265107) in view of JP 4015541 B2. Regarding claim 1, Wang et al. discloses a club head having a body 21 and striking face 22 wherein the two components are welded together to form an enclosed interior (See Figure 2B). The club head includes a top, bottom, heel, toe, and back end. The strike face has a front and back side. Wang et al. does not disclose the materials of the strike face and body, the specific gravity ratio of the strike face and body, or the strike face having a recess and first and second supports. JP 4015541 B2 discloses a club head having a strike face 2A having a recess 4 (See Figures 4 and 5). The strike face further includes a first support 7a near a top and a second support 7b near a bottom for supporting the strike face to the body (See Figures 4 and 5A). JP 4015541 B2 discloses that the recess improves bending of the strike face. One having ordinary skill in the art would have found it obvious to have a recess in the strike face, as taught by JP 4015541 B2, in order to improve the bending of the strike face when struck. One having ordinary skill in the art would have also found it obvious to have first and second supports on the strike face, as taught by JP 4015541 B2, in order to support the strike face onto the body such that the recess is unsupported. It should also be noted that JP 4015541 B2 discloses the strike face 2A made of titanium having a second specific gravity and the body 2B made of stainless steel having a first specific gravity (See Paragraph 0002 and 0015). Titanium has a density of 4.5 g/cm3 and stainless steel has a density of 7.8 g/cm3. Since the specific gravity is the density of the material divided by the density of water, which is 1, the density and the specific gravity are the same value. This results in a ratio of the body to the strike face specific gravities being 1.75. JP 4015541 B2 also notes that the material selection moves the weight to the peripheral of the strike face (See Paragraph 0015). One having ordinary skill in the art would have found it obvious to have a specific gravity ratio of 1.7, as taught by JP 4015541 B2, in order to move the weight of the club head to the perimeter in order to assist in the bending of the strike face. Regarding claim 2, see the above regarding claim 1. Regarding claim 3, seethe above regarding claim 1. Regarding claim 4, Wang et al. shows the cross-sectional area of the enclosed interior volume varying with position from top to bottom (See Figure 2B). Regarding claim 5, Wang et al. shows the body having a front end opposite the back end wherein the strike face defines a portion of the front end and is trapezoidal in shape (See Figures 2B and 2C). Regarding claim 6, Wang et al. discloses the strike face having a plurality of grooves (See Figure 2B). Regarding claim 7, JP 4015541 B2 discloses the strike face abutting the back end only along the first and second supports for allowing the bending of the strike face when being hit (See Figure 5A). Regarding claim 8, see the above regarding claim 1. In addition, the combination would teach the enclosed interior including the recess defined in the back side of the strike face. The enclosed interior would inherently form a cavity in the back side of the body, thus making the enclosed interior the cavity. Regarding claim 9, see the above regarding claim 1. Regarding claim 10, see the above regarding claim 1. Regarding claim 11, Wang et al. discloses the top of the strike face and the bottom of the strike face supported by the body (See Figure 2B). Regarding claim 12, based on the shape of the strike face, the cross-sectional area of the cavity would vary with the position from heel to toe (See Figure 5A). Regarding claim 14, Wang et al. discloses the club head being an iron-type. Regarding claim 15, see the above regarding claim 7. Regarding claim 17, see the above regarding claim 5. Allowable Subject Matter Claims 13 and 16 are 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. Response to Arguments Applicant’s arguments with respect to claim(s) s 1-17 have been considered but are moot because the new ground of rejection does not rely on any reference applied in the prior rejection of record for any teaching or matter specifically challenged in the argument. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ALVIN A HUNTER whose telephone number is (571)272-4411. The examiner can normally be reached on Monday through Friday from 7:30AM to 4:00PM Eastern Time. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Eugene Kim, can be reached at telephone number 571-272-4463. 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 Patent Center. Status information for published applications may be obtained from Patent Center. Status information for unpublished applications is available through Patent Center to authorized users only. Should you have questions about access to the USPTO patent electronic filing system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). Examiner interviews are available via a variety of formats. See MPEP § 713.01. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) Form at https://www.uspto.gov/InterviewPractice. /ALVIN A HUNTER/Primary Examiner, Art Unit 3711
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Prosecution Timeline

Jan 09, 2024
Application Filed
Jun 18, 2025
Non-Final Rejection mailed — §103
Sep 18, 2025
Response Filed
Jan 02, 2026
Final Rejection mailed — §103
Feb 25, 2026
Response after Non-Final Action
Mar 18, 2026
Request for Continued Examination
Apr 07, 2026
Response after Non-Final Action
Apr 22, 2026
Non-Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12629571
FAIRWAY WOOD GOLF CLUB
2y 11m to grant Granted May 19, 2026
Patent 12629569
GOLF CLUB HEAD
2y 8m to grant Granted May 19, 2026
Patent 12629567
Golf Club Head
2y 2m to grant Granted May 19, 2026
Patent 12623126
GOLF CLUB HAVING AN ADJUSTABLE WEIGHT ASSEMBLY
2y 3m to grant Granted May 12, 2026
Patent 12599820
WEIGHTED IRON SET
3y 0m to grant Granted Apr 14, 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
86%
Grant Probability
88%
With Interview (+2.8%)
2y 1m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 1319 resolved cases by this examiner. Grant probability derived from career allowance rate.

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