Prosecution Insights
Last updated: April 19, 2026
Application No. 18/960,559

DENTAL INSTRUMENT WITH A FLEXIBLE TIP END AND METHOD OF MANUFACTURE

Non-Final OA §102§103
Filed
Nov 26, 2024
Examiner
LUCCHESI, NICHOLAS D
Art Unit
3772
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Hu-Friedy Mfg Co. LLC
OA Round
1 (Non-Final)
78%
Grant Probability
Favorable
1-2
OA Rounds
2y 9m
To Grant
88%
With Interview

Examiner Intelligence

Grants 78% — above average
78%
Career Allow Rate
623 granted / 794 resolved
+8.5% vs TC avg
Moderate +9% lift
Without
With
+9.1%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
52 currently pending
Career history
846
Total Applications
across all art units

Statute-Specific Performance

§101
1.7%
-38.3% vs TC avg
§103
32.9%
-7.1% vs TC avg
§102
28.4%
-11.6% vs TC avg
§112
31.0%
-9.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 794 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 . 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. [AltContent: textbox (bend)]Claims 1,3,8,9,10,11 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Hegde et al 20100049227. [AltContent: arrow] PNG media_image1.png 290 763 media_image1.png Greyscale With regard to claims 1 and 3, Hegde et al discloses a method of manufacturing a dental instrument, the method comprising: providing a flexible tip end 144 having a flat body with opposing planar main surfaces, the body including a retaining portion 140 in a proximal end thereof; and forming a shank 166 by at least one of 3D printing or injection molding (injection molding, see paragraph 42) around the retaining portion of the body, such that a distal portion of the shank is coupled to the retaining portion 140 of the body to secure the flexible tip end 144 to the shank, the shank 166 configured to be coupled to a handle 168. With regard to claim 8, note that the shank 166 is in a bent configuration. See above annotated figure. With regard to claim 9, note that forming the shank 166 further comprises forming a handle 168 with the shank 166 at one end of the handle 168. With regard to claim 10, note that providing the flexible tip end 144 comprises providing a foil tip end. Hegde et al refer to tip end 144 as a “flexible” “blade” (see paragraph 47). This can be considered to be a “foil”. With regard to claim 11, note that the foil tip end 144 comprises providing a Nickel Titanium foil tip end. See paragraph 42 which discloses that the tip end 144 may be formed of Nitinol. 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 2 is rejected under 35 U.S.C. 103 as being unpatentable over Hegde et al 20100049227 in view of Castanon et al 20160249947. With regard to claim 2, although Hegde et al discloses forming the shank around the retaining portion of the body, Hegde et al do not disclose doing such via 3D printing. Castanon et al disclose an instrument in which the handle may be formed via 3D printing. See paragraph 179. It would have been obvious to one skilled in the art to form the shank around the retaining portion of the body of Hegde et al via 3D printing, in view of the teaching of Castanon et al that it is known to form a handheld instrument via 3D printing. Claims 4 and 6 are rejected under 35 U.S.C. 103 as being unpatentable over Hegde et al 20100049227 in view of Castanon et al 20160249947, and Rahman 20030022130. With regard to claim 4, although Hegde et al discloses forming the shank around the retaining portion of the body, Hegde et al do not disclose doing such via 3D printing. Castanon et al disclose an instrument in which the handle may be formed via 3D printing. See paragraph 179. It would have been obvious to one skilled in the art to form the shank around the retaining portion of the body of Hegde et al via 3D printing, in view of the teaching of Castanon et al that it is known to form a handheld instrument via 3D printing. Hegde et al/Castanon et al do not disclose forming the 3D printing through one or more apertures extending through the body, or around one or more protrusions extending outwardly from the body. Rahman discloses a handheld instrument in which apertures/protrusions are utilized to secure the handle via a flow of material therethrough. See paragraphs 69 and 82, as well as fig. 10 and 12 as annotated below. [AltContent: arrow][AltContent: arrow][AltContent: textbox (apertures)][AltContent: arrow][AltContent: arrow][AltContent: textbox (protrusions)] PNG media_image2.png 652 607 media_image2.png Greyscale It would have been obvious to one skilled in the art to include apertures or protrusions on the body of the 3D printed shank of Hegde et al/Castanon et al, in view of the teaching of Rahman that apertures/protrusions provide an anti-rotation feature with an assembled shank/handle in a hand-held instrument. Claims 5 and 7 are rejected under 35 U.S.C. 103 as being unpatentable over Hegde et al 20100049227 in view of Rahman 20030022130. With regard to claims 5 and 7, although Hegde et al discloses forming the shank around the retaining portion of the body via injection molding, Hegde et al do not disclose forming the injection molding through one or more apertures extending through the body, or around one or more protrusions extending outwardly from the body. Rahman discloses a handheld instrument in which apertures/protrusions are utilized to secure the handle via a flow of material therethrough. See paragraphs 69 and 82, as well as fig. 10 and 12 as annotated above. It would have been obvious to one skilled in the art to include apertures or protrusions on the body of the shank of Hegde et al during the injection molding process, in view of the teaching of Rahman that apertures/protrusions provide an anti-rotation feature with an assembled shank/handle in a hand-held instrument. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Any inquiry concerning this communication or earlier communications from the examiner should be directed to NICHOLAS D LUCCHESI whose telephone number is (571)272-4977. The examiner can normally be reached M-F 800-430. 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, Eric Rosen can be reached at 571-270-7855. 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. /NICHOLAS D LUCCHESI/Primary Examiner, Art Unit 3772
Read full office action

Prosecution Timeline

Nov 26, 2024
Application Filed
Feb 09, 2026
Non-Final Rejection — §102, §103 (current)

Precedent Cases

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Patent 12594103
MODULAR BONE SCREW FOR SURGICAL FIXATION TO BONE
2y 5m to grant Granted Apr 07, 2026
Patent 12594152
DENTAL FLOSSING DEVICE
2y 5m to grant Granted Apr 07, 2026
Patent 12588970
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2y 5m to grant Granted Mar 31, 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
78%
Grant Probability
88%
With Interview (+9.1%)
2y 9m
Median Time to Grant
Low
PTA Risk
Based on 794 resolved cases by this examiner. Grant probability derived from career allow rate.

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