Prosecution Insights
Last updated: October 04, 2026
Application No. 18/459,038

Arthrodesis Dowel Implant and Methods for Treating Mid-Foot Orthopedic Disorders

Final Rejection §102§103
Filed
Aug 30, 2023
Priority
Aug 31, 2022 — provisional 63/402,888 +1 more
Examiner
MATHEW, SEEMA
Art Unit
3774
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Apex Orthopedics, LLC
OA Round
2 (Final)
71%
Grant Probability
Favorable
3-4
OA Rounds
2m
Est. Remaining
98%
With Interview

Examiner Intelligence

Grants 71% — above average
71%
Career Allowance Rate
509 granted / 713 resolved
+1.4% vs TC avg
Strong +26% interview lift
Without
With
+26.1%
Interview Lift
resolved cases with interview
Typical timeline
3y 3m
Avg Prosecution
27 currently pending
Career history
739
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
52.6%
+12.6% vs TC avg
§102
24.4%
-15.6% vs TC avg
§112
15.7%
-24.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 713 resolved cases

Office Action

§102 §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 . Response to Amendment This office action is responsive to the amendment filed on 07/08/2026. As directed by the amendment: claims 1 and 5 have been amended and new claims 13-20 have been added. Thus, claims 1-20 are presently pending in the application. Response to Arguments Applicant’s amendment to claim 1 to include “a frustonconical dowel having a longitudinal taper from a proximal dorsal surface to a distal plantar surface” has overcome the 102 rejections over Dacosta et al. Therefore, the 102 rejection has been withdrawn. The amendment to claim 5 to include “the fixation member is configured to pass into and through the transverse bore and into bone tissue,” has overcome the previous 101 rejection. Therefore, the previous 101 rejection has been withdrawn. Applicant's arguments filed 07/08/2026 have been fully considered but they are not persuasive. Applicant argues on pages 6-7, the prior art Visotsky does not teach or suggest that the dowel is capable of functioning as an arthrodesis dowel. The examiner respectfully disagrees. Visotsky discloses a tapered dowel for any skeletal site where an opening osteotomy is required to provide improved bone alignment and allows for bony fusion/arthrodesis (abstract, paragraphs [0007-0008] and [0012]), the device can be made larger or smaller depending on the size of the bone osteotomies (paragraph [0008]). In addition, the device of Visotsky is a frustoconical dowel as claimed having a longitudinal taper (abstract and paragraph [0007]) and the dowel having a non-circular (the implant has an elliptical cross-section, see claim 1 of Visotsky). Therefore, Visotsky discloses the claimed invention, the device is fully capable of being used in mid-foot arthrodesis. Applicant argues on page 8, Visotsky does include the word “elliptical”, but this is inconsistent with the remainder of claim 1 which requires a front end with a first diameter and a second end with a second diameter; thus, the reference is to a circular cross-section not with an elliptical cross-section. The examiner respectfully disagrees. The examiner does agree that ellipse has a major and minor axis, in this dowel having an elliptical cross section would have a larger end, or major axis having a larger outer diameter and a smaller end defining the minor axis or the smaller outer diameter. 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 (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 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. Claim(s) 1, 6-7, 11, 13 and 17 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Visotsky et al. U.S. Publication 2002/0038123 A1. Regarding Claim 1, Visotsky et al. discloses for mid-foot arthrodesis (abstract and paragraph [0007] as seen in Figure 1, 2A, 4A), comprising a frustoconical dowel 10 having a longitudinal taper from a proximal dorsal surface to a distal plantar surface thereof (as seen in Figures 1-4E, paragraphs [0007], [0009]), wherein the dowel has a non-circular transverse cross-sectional profile (as seen in Figures 1, 2A, 4A, see Claim 1 of Visotsky). Regarding Claim 6, Visotsky et al. discloses wherein the dowel further comprises an opening 32 passing through the proximal surface 30 thereof, the opening 32 configured to removably receive an insertion instrument (as seen in Figure 1, paragraphs [0024], [0026], [0029]). Regarding Claim 7, Visotsky et al. discloses wherein the dowel further comprises a recess 31 in the proximal surface that extends diametrically across the proximal surface 30 of the dowel 10 (paragraphs [0026] and [0028]). Regarding Claim 11, Visotsky et al. discloses wherein the non-circular transverse cross-sectional profile of dowel is elliptical along an entire or partial longitudinal axis of the dowel (see claim 1). Regarding Claim 13, Visotsky et al. discloses a mid-foot arthrodesis implant (abstract and paragraph [0007] as seen in Figure 1, 2A, 4A), comprising a frustoconical dowel 10 having a longitudinal taper from a dorsal surface to a plantar surface thereof (as seen in Figures 1-4E, paragraphs [0007], [0009]), wherein the dowel has a transverse cross-sectional profile, selected from the group consisting of elliptical (as seen in Figures 1, 2A, 4A, see Claim 1 of Visotsky). Regarding Claim 17, Visotsky et al. discloses wherein the dowel further comprises a recess 31 in the dorsal surface that extends diametrically across the dorsal surface of the dowel 10 (paragraphs [0026] and [0028]). 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. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. Claim(s) 2-3, 12, 14 and 20 is/are rejected under 35 U.S.C. 103 as being unpatentable over Visotsky et al. U.S. Publication 2002/0038123 A1 in view of Gotfried U.S. Publication 2017/0189188 A1. Regarding Claim 2, 3, 12, 14, 20, Visotsky et al. does not expressly disclose wherein the dowel is comprised of a porous osteophilic material, wherein the osteophilic material further is a biocompatible material selected from the group of titanium or polyether ether ketone. Gotfried teaches a device for a bone replacement in the same field of endeavor, the device having a longitudinal taper from the proximal surface to the distal surface (as seen in Figures 1-3B), the device is formed from an osteophilic material such as titanium or PEEK (paragraph [0099], wherein applicant discloses PEEK, titanium as suitable osteophilic and porous material, see paragraph [00155] in applicant’s specification). Therefore, it would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to modify Visotsky’s device to further include titanium or PEEK as taught by Gotfried for the purpose of bone implant that exhibits strength and is biocompatible for implantation. Claim(s) 4-5 is/are rejected under 35 U.S.C. 103 as being unpatentable over Visotsky et al. U.S. Publication 2002/0038123 A1 in view of Boyce et al. U.S. Publication 2001/0020186 A1 Regarding Claim 4, 5, Visotsky et al. does not expressly disclose wherein the dowel further comprises a transverse bore passing through lateral wall surfaces of the dowel and further comprising a fixation member configured to pass into and through the transverse bore and into bone tissue adjacent the dowel. Boyce et al. teaches a device for a bone replacement in the same field of endeavor, the device having a proximal surface and a distal surface (as seen in Figures 49-52), the device 270 comprising an opening 286 passing through the proximal surface and a transverse bore 274 passing through the lateral wall surface (see Figures 49 and 50 and paragraph [0110]) for the purpose of having an opening for receipt of an insertion tool (paragraph [0016], [0091] and [0097]) and a bore for receiving a plug or fixation member 276 that extends outward from the dowel to engage the tissue around the bone (paragraph [0110]) and facilitate bone growth (paragraph [0016] and [0110]). Therefore, it would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to modify Vistosky’s device to further include a device having an opening through the proximal surface and a transverse bore passing through the lateral surface of the device for receiving a fixation member as taught by Boyce et al. for the purpose of having multiple connection interfaces to engage an insertion tool and facilitate bone ingrowth and fixate the device around the tissue around the bone. Claim(s) 15-16 is/are rejected under 35 U.S.C. 103 as being unpatentable over Vistosky et al. U.S. Publication 2002/0038123 A1 in view of Gotfried U.S. Publication 2017/0189188 A1 and further in view of Boyce et al. U.S. Publication 2001/0020186. Regarding Claim 15, 16, Vistosky et al. does not expressly disclose wherein the dowel further comprises a transverse bore passing through lateral wall surfaces of the dowel and further comprising a fixation member configured to pass into and through the transverse bore and into bone tissue adjacent the dowel. Boyce et al. teaches a device for a bone replacement in the same field of endeavor, the device having a proximal surface and a distal surface (as seen in Figures 49-52), the device 270 comprising an opening 286 passing through the proximal surface and a transverse bore 274 passing through the lateral wall surface (see Figures 49 and 50 and paragraph [0110]) for the purpose of having an opening for receipt of an insertion tool (paragraph [0016], [0091] and [0097]) and a bore for receiving a plug or fixation member 276 that extends outward from the dowel to engage the tissue around the bone (paragraph [0110]) and facilitate bone growth (paragraph [0016] and [0110]). Therefore, it would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to modify Vistosky’s device to further include a device having an opening through the proximal surface and a transverse bore passing through the lateral surface of the device for receiving a fixation member as taught by Boyce et al. for the purpose of having multiple connection interfaces to engage an insertion tool and facilitate bone ingrowth and fixate the device around the tissue around the bone. Claim(s) 8-10 and 18-19 is/are rejected under 35 U.S.C. 103 as being unpatentable over Vistosky et al. U.S. Publication 2002/0038123 A1 in view of Hartdegen et al. U.S. Publication 2018/0353172 A1. Regarding Claims 8, 9, 10, 18, 19, Vistosky et al. does not expressly disclose a compression plate engageable within the recess and configured to be affixed to a surface of bone tissue adjacent the dowel, wherein the compression plate further comprises a staple and wherein the compression plate further comprises tissue anchor openings at opposing ends of the compression plate configured to receive a tissue anchor in each of the tissue anchor openings. Hartdegen et al. teaches a device for a bone replacement, the device 1900 comprises dowel/spacer 1950 and a compression plate 4000 engageable within a recess on the spacer (as seen in Figures 9A-9B, 12 and further seen in Figures 51-54), the compression plate comprises a staple 200 and tissue anchors 2280 at opposing ends of the compression plate for the purpose of having one or more fasteners to relieve stress from the main body of the compression plate and allow the implant to be secured to the bone (paragraphs [0212-0214]). Therefore, it would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to modify Vistosky’s device to further include a compression plate engageable with the recess of the dowel and having a staple and tissue anchors at opposite sides of the compression plate for the purpose of having one or more fasteners to relieve stress from the main body of the compression plate and allow the implant to be secured to the bone. Conclusion THIS ACTION IS MADE FINAL. 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 SEEMA MATHEW whose telephone number is (571) 270-1452. The examiner can normally be reached on Monday-Friday 9 am – 5 pm. If attempts to reach the examiner by telephone are unsuccessful, please contact the examiner’s supervisor, SPE, Melanie Tyson at (571) 272-9062. 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. /SEEMA MATHEW/ Primary Examiner, Art Unit 3774
Read full office action

Prosecution Timeline

Aug 30, 2023
Application Filed
Feb 05, 2026
Non-Final Rejection mailed — §102, §103
Jul 08, 2026
Response Filed
Sep 22, 2026
Final Rejection mailed — §102, §103 (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

3-4
Expected OA Rounds
71%
Grant Probability
98%
With Interview (+26.1%)
3y 3m (~2m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 713 resolved cases by this examiner. Grant probability derived from career allowance rate.

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