Prosecution Insights
Last updated: April 19, 2026
Application No. 18/830,311

SYSTEMS AND METHODS FOR ADHESIVE-BASED PART RETENTION FEATURES IN ADDITIVELY MANUFACTURED STRUCTURES

Non-Final OA §103§DP
Filed
Sep 10, 2024
Examiner
PATWARDHAN, ABHISHEK A
Art Unit
1746
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Divergent Technologies Inc.
OA Round
1 (Non-Final)
74%
Grant Probability
Favorable
1-2
OA Rounds
2y 7m
To Grant
85%
With Interview

Examiner Intelligence

Grants 74% — above average
74%
Career Allow Rate
181 granted / 244 resolved
+9.2% vs TC avg
Moderate +11% lift
Without
With
+10.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
31 currently pending
Career history
275
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
59.7%
+19.7% vs TC avg
§102
13.1%
-26.9% vs TC avg
§112
20.7%
-19.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 244 resolved cases

Office Action

§103 §DP
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. Election/Restrictions Applicant’s election without traverse of Group I in the reply filed on 10/15/2025 is acknowledged. Claim 36-56 withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected invention, there being no allowable generic or linking claim. Election was made without traverse in the reply filed on 10/15/2025. Double Patenting The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A nonstatutory double patenting rejection is appropriate where the conflicting claims are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on nonstatutory double patenting provided the reference application or patent either is shown to be commonly owned with the examined application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. See MPEP § 717.02 for applications subject to examination under the first inventor to file provisions of the AIA as explained in MPEP § 2159. See MPEP § 2146 et seq. for applications not subject to examination under the first inventor to file provisions of the AIA . A terminal disclaimer must be signed in compliance with 37 CFR 1.321(b). The filing of a terminal disclaimer by itself is not a complete reply to a nonstatutory double patenting (NSDP) rejection. A complete reply requires that the terminal disclaimer be accompanied by a reply requesting reconsideration of the prior Office action. Even where the NSDP rejection is provisional the reply must be complete. See MPEP § 804, subsection I.B.1. For a reply to a non-final Office action, see 37 CFR 1.111(a). For a reply to final Office action, see 37 CFR 1.113(c). A request for reconsideration while not provided for in 37 CFR 1.113(c) may be filed after final for consideration. See MPEP §§ 706.07(e) and 714.13. The USPTO Internet website contains terminal disclaimer forms which may be used. Please visit www.uspto.gov/patent/patents-forms. The actual filing date of the application in which the form is filed determines what form (e.g., PTO/SB/25, PTO/SB/26, PTO/AIA /25, or PTO/AIA /26) should be used. A web-based eTerminal Disclaimer may be filled out completely online using web-screens. An eTerminal Disclaimer that meets all requirements is auto-processed and approved immediately upon submission. For more information about eTerminal Disclaimers, refer to www.uspto.gov/patents/apply/applying-online/eterminal-disclaimer. Claims 25-35 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-10 of U.S. Patent No. 12115583B2. Although the claims at issue are not identical, they are not patentably distinct from each other because while claim 1 of U.S Patent 12115583B2 is a claim that is narrower in scope, with limitations of a fast curing adhesive and a mechanical feature, as well as a “connection by a wall” rather than a surface, instant claim 25 is not patentably distinct from claim 1 of U.S Patent 12115583B2, as claim 1 of U.S Patent 12115583B2 maps onto the all the claimed features of the instant claim 25, such as a “first portion configured to connect to a second part via a first connection, wherein the first connection comprises a second adhesive; and a feature co-printed with the first portion and configured to provide a second connection between the first portion and second part” and the limitations as pertaining to the first portion, first connection, and second part, as well as a first adhesive. Thus, claim 1 of U.S Patent 12115583B2 is narrower in scope than instant claim 25, and meets the broader limitations of instant claim 25. 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. Claim(s) 25-30, 32-35 is/are rejected under 35 U.S.C. 103 as being unpatentable over Twelves (U.S PG Pub 20180290423A1), Levine (U.S PG Pub 2018022019A1), and Woleader (U.S PG Pub 20140241790A1). Regarding claims 25-27, Twelves, is drawn to the art of bonding polymer components that are additively manufactured [0005] wherein the components have mating features designed to fit into each other and further an adhesive to form a mechanical lock [0005-0006]. Twelves discloses a first component (32) with a first mechanical feature (36) that extends beyond and overlaps a second portion (38) of the second part (34) such that a first side not facing in the first direction contacts a first adhesive prior to the first portion being fixed to the second part via the first connection [0020 & 0022-0027]. Twelves also discloses the first connection being a tongue and groove connection (Figures 1a-1b, 4c, 5c). Twelves also discloses a mechanical feature comprising bars and wherein the bar is arranged within an opening and further wherein the adhesive flows between the bars (see annotated figure 3C below). Twelves has not explicitly disclosed the second connection being separated from the first connection by a surface. Twelves also has not disclosed the first and second adhesive being used wherein the first adhesive constitutes a second connection and the second adhesive constitutes a first connection. The above limitations are known, however, from Woleader and Levine, respectively. Woleader, drawn also to the art of joining two parts using an adhesive (Abstract), discloses a wall (212) between the first (190) and second part (196) [0051 & 0054] (Figures 2 & 10). Woleader discloses that the wall (212) divides the bondline length (306) [0051] i.e. provides a division between the connection between the first and second part. It would have been obvious to an ordinarily skilled artisan to have modified the connection of Twelves, with the surface providing a division between connections, as disclosed by Woleader, to arrive at the instant invention, in order to be able to control the flow of adhesive within the bondline during the bonding process [0005]. Regarding the first connection comprising a second adhesive and the second connection comprising a first adhesive, the use of an adhesive in a secondary connection, is known in the art for a secondary connection to comprise an adhesive as disclosed by Levine. Levine is drawn also to the art of connecting a first and second substructure (Abstract), wherein the first (12) and second substructures (40) can be AM manufactured parts (Figure 6; [0017 & 0022]). Levine discloses a primary connection comprising a first adhesive (first adhesive of Levine 42 – interpreted in this instance as the second adhesive of instant application) and a secondary connection comprising a second adhesive (44) (second adhesive of Levine interpreted as the first adhesive of instant application), used to join or connect the two substructures (Figures 4 & 5). Levine further discloses that the two adhesives can be different [0022], and further discloses that the adhesives can be hot-melt (i.e. heat curable) or UV curing adhesives [0022-0023 & 0018]. Thus, Levine has disclosed a secondary connection comprising a first adhesive (second adhesive 44 of Levine) and a primary connection comprising an adhesive (first adhesive 42 of Levine), and has further disclosed that these adhesives can be different, and thus having different rates of curing (i.e. one adhesive being faster curing than the other). Thus, Levine discloses that two different adhesives (two different connections comprising adhesives) can be used to connect a first and second part. Further, Levine has disclosed that such a connection method may decrease overall time and cost to attach substructures (Abstract) and further is one which allows for rapid or convenient assembly of parts [0005]. Levine has disclosed adhesives that are hot-melt materials, as Levine has disclosed the adhesives can be heat curing [0023 & 0018], and has disclosed these adhesives being used in a secondary connection as first adhesive (second adhesive 44 of Levine), and further that the adhesive is applied between the first and second part (figures 4 & 5 of Levine). Levine has already disclosed the secondary connection comprising a first adhesive (second adhesive 44 of Levine) and the adhesive being applied between the first and second part and being a UV curable adhesive [figures 4 & 5; [0023 & 0018]). It would have been obvious to an ordinarily skilled artisan to have modified the structure of Twelves, with the secondary connection comprising a hot-melt and/or UV curing adhesive (second adhesive 44 of Levine), as disclosed by Levine, to arrive at the instant invention, in order to obtain a more rapid or convenient assembly of parts [0005], and to decrease overall time and cost to attach substructures (Abstract). Regarding claims 28-30, Twelves discloses a first component with a first mechanical feature that extends beyond and overlaps a second portion of the second part such that a first side not facing in the first direction contacts a first adhesive prior to the first portion being fixed to the second part via the first connection [0020 & 0022-0027]. Twelves also discloses the first connection being a tongue and groove connection (Figures 1a-1b, 4c, 5c). The tongue and groove connection of Twelves is interpreted as the first feature (36) configured to mate with a second feature (38) of the second part (34). Regarding claim 32, Twelves suggests implicitly that the first feature is removable, as Twelves discloses that the undercut features (i.e. first and second features) can be grown directly on the polymer components (i.e. first and second part) [0018-0019], while also mentioning that the undercut features can be added to the polymer components [0018], and wherein the components are manufactured by normal additive manufacturing processes and wherein the undercut features are manufactured by 3D printing or additive manufacturing [0022]. Thus, Twelves has disclosed implicitly that the features can be removable, as being able to be grown directly onto the polymer components and also added to the polymer components, would suggest removability, in the instance where the undercut features are added to the polymer components. Regardless, the courts have held that making a part separable i.e. removable, is a matter of obviousness to an ordinarily skilled artisan, in the absence of new or unexpected results (MPEP 2144.04 V(C)). Regarding claims 33-35, Twelves also discloses a mechanical feature comprising bars and wherein the bar is arranged within an opening and further wherein the adhesive flows between the bars (see annotated figure 3C below). PNG media_image1.png 634 851 media_image1.png Greyscale Claim(s) 31 is/are rejected under 35 U.S.C. 103 as being unpatentable over Twelves (U.S PG Pub 20180290423A1), Levine (U.S PG Pub 2018022019A1), Woleader (U.S PG Pub 20140241790A1), and Syvret (U.S PG Pub 20140212637A1). Regarding claim 31, Twelves and Levine have not explicitly disclosed a second adhesive being used, wherein the first adhesive is faster curing than the second adhesive. Syvret, drawn also to the art of forming a bonded structure (Abstract), discloses bonding two substrates (14 & 16) (Figures 2a-2c), with a fast curing adhesive (18) and a slow curing adhesive (12) in between the substrates [0034]. Syvret further discloses that applying a fast curing adhesive and a slow curing adhesive allows the bonded structure to be moved quickly to a next station in the production line [0007]. In short, the application of a fast curing adhesive and a slow curing adhesive allows the bonded structure to be accurately and quickly bonded, which allows the structure to be moved to a next station in a production line, without the slow-curing adhesive (majority of the applied adhesive) fully curing [0007]. Syvret further discloses (Figure 3), a primary connection, which is the slow acting adhesive (adhesive 30), and a retention element comprising a secondary connection (mechanical fasteners and fast curing adhesive) which is distinct from the primary connection, and comprises a first adhesive (the fast curing adhesive) (Figure 3) [0035-0037]. It would have been obvious to an ordinarily skilled artisan to have modified the structure of Twelves and Levine, with the use of a first and second adhesive, wherein the first adhesive is faster curing than the second adhesive, in order to be able to achieve accurate and fast bonding and to be able to move the bonded structure quickly to a next station in the production, without the majority of the adhesive (i.e. second adhesive) being fully cured [0007]. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ABHISHEK A PATWARDHAN whose telephone number is (571)272-8431. The examiner can normally be reached Monday to Friday 7:30am-5pm. 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, Michael Orlando can be reached at (571)270-5038. 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. /ABHISHEK A PATWARDHAN/Examiner, Art Unit 1746 /MICHAEL N ORLANDO/Supervisory Patent Examiner, Art Unit 1746
Read full office action

Prosecution Timeline

Sep 10, 2024
Application Filed
Apr 03, 2025
Response after Non-Final Action
Nov 19, 2025
Non-Final Rejection — §103, §DP (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

1-2
Expected OA Rounds
74%
Grant Probability
85%
With Interview (+10.8%)
2y 7m
Median Time to Grant
Low
PTA Risk
Based on 244 resolved cases by this examiner. Grant probability derived from career allow rate.

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