Prosecution Insights
Last updated: July 17, 2026
Application No. 17/992,008

IMPLANT FOR CORRECTING A DEFECT OF A BONE STRUCTURE WITH NAVIGATION FIDUCIALS

Non-Final OA §103
Filed
Nov 22, 2022
Priority
May 29, 2020 — provisional 63/031,888 +1 more
Examiner
BLASS, PARIS MARIE
Art Unit
3774
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Materialise NV
OA Round
3 (Non-Final)
52%
Grant Probability
Moderate
3-4
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 52% of resolved cases
52%
Career Allowance Rate
15 granted / 29 resolved
-18.3% vs TC avg
Strong +56% interview lift
Without
With
+56.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 7m
Avg Prosecution
41 currently pending
Career history
73
Total Applications
across all art units

Statute-Specific Performance

§103
87.1%
+47.1% vs TC avg
§102
12.0%
-28.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 29 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. Response to Amendment The amendment filed 03/19/2026 has been entered. Claims 1, 2, 4, 6-14, and 17-22 remain pending. Claim 60 has been added. Response to Arguments Applicant’s argument with respect to Papay no longer reading on the limitation “wherein the depression is a wedge-shaped depression or elongated depression that is elongated in shape along the second surface, the Examiner respectfully disagrees. Due to Papay disclosing in paragraph [0045] that point features 112 can be any shape or size, it would have been obvious in view of the additional prior art applied below to change the shape of the depressions to either elongated or wedge shaped. Applicant’s argument with respect to Papay no longer reading on the updated claim limitations for claims 7, 8, and 13 describing the elevated ridge, as the implant is capable of being positioned to sit underneath soft tissue, the corner is capable of “trapping” the stylus depending on the size by blocking movement in at least one direction, and depending on the force applied to the stylus the “gradual” transition, being the transition between the surface and the highest point of the elevated ridge, could “prevent” the stylus from going up along the side and over the ridge. 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. 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. Claims 1-2, 4, 6-14, 17-22, and 60 are rejected under 35 U.S.C. 103 as being unpatentable over US 20150105858 A1 (hereafter --Papay--), in view of US 20200100894 A1 (hereafter --Woodburn--). Regarding Claim 1, Papay discloses an implant (100) for correcting a defect of a bone structure (see paragraph [0037]), comprising: a first surface comprising a shape configured to interface with a surface of the bone structure (see annotated first surface 204 in Figure 2 below, see paragraph [0039]); and a second surface opposite the first surface and substantially conformal to the shape of the first surface (see annotated second surface 102 in Figure 1 below, see also paragraph [0039]), the second surface comprising: three or more point features on the second surface (see annotated point features in Figure 1 below), wherein the three or more point features comprise a first point feature, a second point feature, and a third point feature that form nodes of a triangle (see annotated first, second, and third point features 112 in Figure 1 below), wherein each of the three or more point features are recessed below the second surface (see paragraph [0042]), wherein at least one of the three or more point features comprises a depression (see paragraph [0042] denoting that point features 112 can extend partially or all the way through the implant, the descent of the extension into the implant being the depressions, depression being defined as “a place or part that is lower than the surrounding area” (see Merriam Webster online definition 3)), and an elevated ridge at least partially surrounding at least one of the three or more point features (see annotated elevated ridge 514 in Figure 1 below, see also paragraph [0048] denoting that elevated ridges 514 can be protruding above the implant). The limitation “configured to receive a tip of a stylus angled close to tangentially to the second surface” is treated as functional language, that is given limited patentable weight. The stylus is not positively recited as part of the claimed invention. The prior art is not required to disclose a stylus, but merely have the capability of performing the recited function. Due to the depression being a recess that is able to be touched by at least some existing stylus, it is therefore able to “receive a tip of a stylus angled close to the surface”. PNG media_image1.png 571 934 media_image1.png Greyscale Papay discloses wherein the depression could be any shape (see paragraph [0045] denoting that 112 can be any shape or size), however fails to specifically disclose wherein the depression is a wedge-shaped depression or elongated depression that is elongated in shape along the second surface. Woodburn discloses an orbital implant for implantation in the eye of a patient, wherein the implant comprises of a first surface, a second surface, and depressions (see annotated depressions in Figure 1 below). Woodburn teaches elongated depression that is elongated in shape along the second surface (see annotated depressions in Figure 1 below being both “elongated” and “wedge-shaped). PNG media_image2.png 461 628 media_image2.png Greyscale Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date for the depression of Papay to be an elongated depression that is elongated in shape along the second surface or to be wedge shaped, the substitution of one known element (depression shape of Papay) for another (either of the depression shapes of Woodburn) would have been obvious to one of ordinary skill in the art at the time of the invention since the substitution of the depression shapes shown in Woodburn would have yielded predictable results, namely, a depression with an elongated shape, or a depression with a wedge shape, as disclosed in Woodburn. Regarding Claim 2, Papay as modified discloses the implant of claim 1, wherein at least another one of the three or more point features comprises a hole through the implant from the first surface to the second surface (see paragraph [0042] denoting that the apertures 112 can extend fully through both surfaces 102 and 204). The limitation “configured to receive a tip of a stylus angled close to tangentially to the second surface” is treated as functional language, that is given limited patentable weight. The prior art is not required to disclose this function, but merely have the capability of performing the recited function. Due to the hole being a recess that is able to be touched by a stylus, it is therefore able to “receive a tip of a stylus angled close to the surface”. Regarding Claim 4, Papay as modified discloses the implant of claim 1, wherein the depression is a wedge-shaped depression (see paragraph [0045] denoting that 112 can be any shape or size, see also claim 1 rejection). Regarding Claim 6, Papay discloses the implant of claim 1, wherein the elevated ridge surrounds the at least one or more of the three or more point features on a distal side (see annotated point features and elevated ridge in Figures 1 and 2 above). Regarding Claim 7, Papay as modified discloses the implant of claim 1, wherein the elevated ridge is formed along a distal edge of the second surface (see annotated second surface and distal edge in Figure 1 above), and wherein the distal edge is positioned to sit underneath soft tissue during implantation of the implant (the distal edge of the implant is capable of being implanted under soft tissue as it is disclosed that it is configured for contact with an underside of a patient’s facial tissue (see Abstract)). Regarding Claim 8, Papay as modified discloses the implant of claim 1, wherein the elevated ridge comprises at least one of a corner, a hook, a notch, or a gap at the one or more of the three or more point features (see annotated corner in Figure 1 above), wherein the at least one or the corner, the hook, the notch, or the gap is configured to trap the stylus at the one or more of the three or more point features (due to the corner of the protrusion having a space between the surface and the protruded surface, and the corner being near a “point feature”, the space is able to be touched by at least some existing stylus, and therefore “trap” a stylus from movement in at least one direction between the corner and point feature depending on the size and shape of the stylus). Regarding Claim 9, Papay as modified discloses the implant of claim 8. The limitation “wherein the corner, hook, notch, or gap is configured to receive the tip of the stylus angled substantially tangential to the second surface” is treated as functional language, that is given limited patentable weight. The prior art is not required to disclose this function, but merely have the capability of performing the recited function. Due to the corner of the protrusion having a space between the surface and the protruded surface, the space is able to be touched by at least some existing stylus, and is therefore able to “receive a tip of a stylus angled close to the surface”. Regarding Claim 10, Papay as modified discloses the implant of claim 1, wherein the elevated ridge extends from the first point feature of the three or more point features to the second point feature of the three or more point features (see annotated first and second point features, as well as the elevated ridges in Figure 1 above). Regarding Claim 11, Papay as modified discloses the implant of claim 10, further comprising another elevated ridge on the second surface, the other elevated ridge extending from the second point feature to the third point feature of the three or more point features (see annotated elevated ridges in Figure 1 above, both of which extend from each point feature). Regarding Claim 12, Papay as modified discloses the implant of claim 11, wherein the elevated ridge and the other elevated ridge form a continuous ridgeline on the second surface (see annotated elevated ridges in Figure 1 above). Regarding Claim 13, Papay as modified discloses the implant of claim 1, wherein the implant further comprises a gradual transition at a side of the elevated ridge from a top of the elevated ridge to the second surface (see annotated gradual transition in Figure 5 below), wherein the gradual transition is configured to prevent the stylus being guided along the side of the elevated ridge (since the “elevated ridge” is elevated along the surface, depending on the force applied to the stylus the “gradual” transition, being the transition between the surface and the highest point of the elevated ridge, could “prevent” the stylus from going up along the side and over the ridge). “Gradual” transition is broad, and therefore is being given its broadest reasonable interpretation to encompass the structure disclosed by Papay. PNG media_image3.png 523 695 media_image3.png Greyscale Regarding Claim 14, Papay as modified discloses the implant of claim 13, wherein the side is a distal side of the elevated ridge (see annotated distal side in Figure 5 above). Regarding Claim 17, Papay as modified discloses the implant of claim 1, wherein the elevated ridge comprises a concave side (see annotated concave side in Figure 5 above). The limitation “for receiving the tip of the stylus” is treated as functional language, that is given limited patentable weight. The prior art is not required to disclose this function, but merely have the capability of performing the recited function. Due to the side of the protrusion having a space between the surface and the protruded surface, the space is able to be touched by at least some existing stylus, and is therefore able to “receive a tip of a stylus”. Regarding Claim 18, Papay as modified discloses the implant of claim 17, wherein the concave side is a proximal side of the elevated ridge (see annotated proximal side in Figure 5 above). Regarding Claim 19, Papay as modified discloses the implant of claim 1, wherein the elevated ridge extends along a path between the first point feature of the three or more point features and the second point feature of the three or more point features, wherein each of the one or more elevated ridge is located on a first side of the path and no elevated ridge is located on a second side of the path (see annotated path, first side of path, and second side of path in Figure 5 above). Regarding Claim 20, Papay as modified discloses the implant of claim 19, wherein the first side of the path is a distal side of the path (see annotated path and distal side in Figure 5 above). Regarding Claim 21, Papay as modified discloses the implant of claim 1, further comprising a plurality of perforations through the implant from the first surface to the second surface (see paragraph [0042] denoting that the apertures 112 can extend fully through both surfaces 102 and 204). Regarding Claim 22, Papay as modified discloses the implant of claim 21, wherein a path between the first point feature of the three or more point features and the second point feature of the three or more point features does not include the plurality of perforations (see annotated path in Figure 5 above). Regarding Claim 60, Papay as modified discloses the implant of claim 1, wherein the depression is the elongated depression (see paragraph [0045] denoting that 112 can be any shape or size, see also claim 1 rejection). Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). 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 PARIS MARIE BLASS whose telephone number is (703)756-5375. The examiner can normally be reached Monday - Thursday 9 a.m. - 7 p.m. ET. 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, Melanie Tyson can be reached 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 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. /PARIS MARIE BLASS/Examiner, Art Unit 3774 /SARAH W ALEMAN/Primary Examiner, Art Unit 3774
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Prosecution Timeline

Show 3 earlier events
Oct 16, 2025
Examiner Interview Summary
Oct 27, 2025
Response Filed
Jan 23, 2026
Non-Final Rejection mailed — §103
Mar 04, 2026
Examiner Interview Summary
Mar 04, 2026
Applicant Interview (Telephonic)
Mar 19, 2026
Response Filed
May 11, 2026
Final Rejection mailed — §103
Jun 17, 2026
Response after Non-Final Action

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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
52%
Grant Probability
99%
With Interview (+56.0%)
3y 7m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 29 resolved cases by this examiner. Grant probability derived from career allowance rate.

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