Prosecution Insights
Last updated: April 19, 2026
Application No. 18/519,930

Medical Device using Bioabsorbable Material

Non-Final OA §DP
Filed
Nov 27, 2023
Examiner
GANESAN, SUBA
Art Unit
3774
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Xeltis B V
OA Round
1 (Non-Final)
74%
Grant Probability
Favorable
1-2
OA Rounds
3y 2m
To Grant
88%
With Interview

Examiner Intelligence

Grants 74% — above average
74%
Career Allow Rate
491 granted / 667 resolved
+3.6% vs TC avg
Moderate +14% lift
Without
With
+14.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
30 currently pending
Career history
697
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
45.5%
+5.5% vs TC avg
§102
26.6%
-13.4% vs TC avg
§112
19.3%
-20.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 667 resolved cases

Office Action

§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 . Allowable Subject Matter Claims 1-8 are allowed. The following is a statement of reasons for the indication of allowable subject matter: The closest prior art is Nseir Manassa et al. (Pub. No: 2017/0072089) disclosing an electrospun (para. 34) material fully capable of serving as a mitral chordae device (para. 76, 77) comprising: a stand-alone bioabsorbable fibrous network (abstract), wherein the bioabsorbable (para. 45, 55) fibrous network (para. 34) has a tensile strength of at least about 0.1 MPa (para. 217), a suture retention of at least about 0.5 N (para. 170), and pores with a pore size in between 1 to 300 micrometers (para. 373) allowing cell infiltration and cell ingrowth throughout the thickness of the bioabsorbable fibrous network (note, this limitation is functional language. Given that the prior art has the same pore size as the claim, the prior art is fully capable of allowing cell infiltration and ingrowth throughout the thickness of the bioabsorbable fibrous network), wherein the bioabsorbable fibrous network has electrospun polymers (para. 34), or a matrix with one or more supramolecular compounds with a fiber diameter of 1 micrometer to 50 micrometer (para. 30), wherein upon implantation the bioabsorbable fibrous network is capable of progressively being absorbed by a body and replaced by new tissue growth to replace the bioabsorbable fibrous network (para. 45). However, Nseir Manassa lacks an electrospun material having a gradient in properties in the electrospun material or a fibrous network with a coefficient of friction below 0.8. As allowable subject matter has been indicated, applicant's reply must either comply with all formal requirements or specifically traverse each requirement not complied with. See 37 CFR 1.111(b) and MPEP § 707.07(a). 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 1-8 rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-8 of U.S. Patent No. 11872134. Although the claims at issue are not identical, they are not patentably distinct from each other because the application claim is merely broader than the patent claim. The patent claim contains all of the elements of the application claim, and additionally recites features of the implant such that it serves as mitral chord. Thus the invention of claims 1-8 of the patent is in effect a “species” of the “generic” invention of application claims 1-8. It has been held that the generic invention is “anticipated” by the “species”. See In re Goodman, 29 USPQ2d 2010 (Fed. Cir. 1993). Since application claims 1-8 are anticipated by patent claims 1-8 the claims are not patentably distinct. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to SUBA GANESAN whose telephone number is (571)272-3243. The examiner can normally be reached Monday-Friday, 8 AM - 5 PM Mountain Time. 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, Jerrah Edwards can be reached on (408) 918-7557. 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. /SUBA GANESAN/Primary Examiner, Art Unit 3774
Read full office action

Prosecution Timeline

Nov 27, 2023
Application Filed
Nov 08, 2025
Non-Final Rejection — §DP (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12594160
PROSTHETIC HEART VALVE
2y 5m to grant Granted Apr 07, 2026
Patent 12588988
IMPLANT DELIVERY
2y 5m to grant Granted Mar 31, 2026
Patent 12588989
IMPLANT DELIVERY
2y 5m to grant Granted Mar 31, 2026
Patent 12582520
IMPLANT DELIVERY
2y 5m to grant Granted Mar 24, 2026
Patent 12575928
Devices, Systems, and Methods for an Implantable Heart-Valve Adapter
2y 5m to grant Granted Mar 17, 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
74%
Grant Probability
88%
With Interview (+14.0%)
3y 2m
Median Time to Grant
Low
PTA Risk
Based on 667 resolved cases by this examiner. Grant probability derived from career allow rate.

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