Prosecution Insights
Last updated: August 06, 2026
Application No. 18/280,802

Kink Resistance Tubular Graft Implants

Final Rejection §102
Filed
Sep 07, 2023
Priority
Mar 23, 2021 — provisional 63/164,657 +1 more
Examiner
NERENBERG, RENEE FLORENCIA
Art Unit
3774
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Xeltis AG
OA Round
2 (Final)
Grant Probability
Favorable
3-4
OA Rounds

Examiner Intelligence

Grants only 0% of cases
0%
Career Allowance Rate
0 granted / 0 resolved
-70.0% vs TC avg
Minimal +0% lift
Without
With
+0.0%
Interview Lift
resolved cases with interview
Typical timeline
Avg Prosecution
25 currently pending
Career history
22
Total Applications
across all art units

Statute-Specific Performance

§103
56.4%
+16.4% vs TC avg
§102
34.6%
-5.4% vs TC avg
§112
7.3%
-32.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 0 resolved cases

Office Action

§102
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 Arguments Applicant's arguments filed 6/1/26 have been fully considered but they are not persuasive. The applicant argues that Puckett’s invention is a seamed tube, while the present invention differs in being a continuous, seamless tube. The examiner acknowledges that Puckett says that “in some embodiments, a seam may be present”, as pointed out by the applicant, but notes that the bolded words indicate that these are not essential to Puckett’s invention. Further, the applicant does not claim a seamless tube. In claim 1 the applicant claims a “continuous surface”, which does not exclude a seam, and a “spiral rolled configuration,” with suggests a seam at the edge of the rolled configuration. Claim Objections Claim 3, 4 are objected to because of the following informalities: “polymers” should read “polymer”. Appropriate correction is required. Claim Rejections - 35 USC § 102 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) 1-4 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Puckett (WO2013151778). With regards to claim 1, Puckett discloses a tubular electrospun graft implant (90), comprising: (a) an electrospun tube (70), wherein the electrospun tube (70) has a longitudinal axis (Pg 35, Line 3; “wrapped, e.g., around a hypotube,” a tube will inherently have a longitudinal axis), and an outer surface (Refer to figure below), wherein the electrospun tube (70) is a continuous inner lumen (70, where a tube is continuous) for the tubular electrospun graft implant (FIG 8); (b) one or more polymer layers of an electrospun sheet (76) rolled over the outer surface (Pg 35, Line 4; “An unsintered mat of espun PTFE 76 is wrapped around the structural frame”; wherein the term “wrapped” is synonymous with “rolled”) of the electrospun tube (70) and around the longitudinal axis of the electrospun tube (70), wherein the one or more rolled polymer layers of the electrospun sheet (76) provide the electrospun tube (70) a spiral rolled configuration at the outer surface of the electrospun tube (88); and (c) an electrospun polymer tube (78) surrounding the spiral configuration, wherein the electrospun polymer tube (78) is a continuous outer surface of the tubular electrospun graft implant (FIG 8). PNG media_image1.png 123 174 media_image1.png Greyscale With regards to claim 2, Puckett discloses the tubular electrospun graft implant as set forth in claim 1, wherein there are between 10 to 20 layers (pg 10, line 29, “the composite devices described herein can have… 10-layered, or having even more layers”). With regards to claim 3, Puckett discloses the tubular electrospun graft implant as set forth in claim 1, wherein each of the one or more polymer layers have a thickness between 30 micrometers to 50 micrometers or a thickness between 20 micrometers to 100 micrometers (pg 9, line 16; “each layer can have an average thickness ranging from about 0.0001 inches to about 0.25 inches”). With regards to claim 4, Puckett discloses the tubular electrospun graft implant as set forth in claim 1 wherein there are two or more polymer layers wherein the layers have different fiber directions relative to each other (pg 8, line 25; “electrospun layers… are in random orientation with respect to one another”). 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 RENEE FLORENCIA NERENBERG whose telephone number is (571)272-9599. The examiner can normally be reached M-F 7:30-5. 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. /R.F.N./Patent Examiner, Art Unit 3774 /MELANIE R TYSON/Supervisory Patent Examiner, Art Unit 3774
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Prosecution Timeline

Sep 07, 2023
Application Filed
Jan 09, 2026
Non-Final Rejection mailed — §102
Jun 01, 2026
Response Filed
Jul 10, 2026
Final Rejection mailed — §102 (current)

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Prosecution Projections

3-4
Expected OA Rounds
Grant Probability
Moderate
PTA Risk
Based on 0 resolved cases by this examiner. Grant probability derived from career allowance rate.

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