Prosecution Insights
Last updated: April 19, 2026
Application No. 17/478,037

KINK RESISTANT GRAFT

Final Rejection §103
Filed
Sep 17, 2021
Examiner
DEONAUTH, NIRVANA
Art Unit
3726
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
W. L. Gore & Associates, Inc.
OA Round
5 (Final)
69%
Grant Probability
Favorable
6-7
OA Rounds
3y 2m
To Grant
99%
With Interview

Examiner Intelligence

Grants 69% — above average
69%
Career Allow Rate
409 granted / 591 resolved
-0.8% vs TC avg
Strong +34% interview lift
Without
With
+33.7%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
31 currently pending
Career history
622
Total Applications
across all art units

Statute-Specific Performance

§103
37.2%
-2.8% vs TC avg
§102
29.9%
-10.1% vs TC avg
§112
29.1%
-10.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 591 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 . Continued Examination Under 37 CFR 1.114 A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on 12/3/25 and 2/23/36 has been entered. Claim Rejections - 35 USC § 103 3. 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. 4. Claim(s) 1-7 and 16 is/are rejected under 35 U.S.C. 103 as being unpatentable over Vonesh et al. (US 6,673,102) in view of Kariniemi et al. (US 2010/0106235). 5. Regarding to claim 1, Vonesh et al. discloses a method of forming a kink resistant graft [as described in column 5 lines 46-48, column 7 lines 39-41 and column 13 lines 25-26 in Vonesh et al.] comprising: wrapping a film (a first wrapping of a film to form cover 18, as described in column 7 lines 65-column 9 line 4 and column 18 lines 3-17 and can be seen from Figure 1 in Vonesh et al.) to form an inner graft layer (an inner layer of the film of first segment 14 that is slit and helically wrapped in approximately 6 layers, as described in column 7 lines 65-column 9 line 4 and column 18 lines 3-17 and can be seen from Figure 1 in Vonesh et al.) forming a tube with a central lumen extending from a first end of the tube to a second end of the tube [as can be seen from Figure 1 in Vonesh et al.]; scrunching (scrunching, as described in column 9 lines 5-11) the inner graft layer (inner layer film that is slit and helically wrapped in approximately 6 layers) to form corrugations including at least one of folds and creases in the inner graft layer [as described in column 9 lines 5-11 and can be seen from Figure 1 in Vonesh et al. Note that the prior art discloses a step of “scrunching” which is defined as causing to draw together and crumple (Merriam Webster Online Dictionary). “Crumple” is defined as causing a wrinkle or crease (Merriam Webster Online Dictionary). The prior art of record therefore is interpreted as disclosing “creases”], the corrugations providing a stored length of the corrugated inner graft layer [as described in column 9 lines 5-27 and column 13 lines 19-column 14 line 40]; wrapping an outer graft layer (additional layer wrapped over the construction in approximately 5 overlapping layers, as described in column 9 lines 35-40 and column 18 lines 31-55) and over the corrugated inner graft layer to cover the corrugated inner graft layer [as described in column 9 lines 35-40 and column 18 lines 31-55]; and bonding the outer graft layer to the corrugated inner graft layer to form the kink resistant graft [as described in column 9 lines 43-55 and column 9 lines 35-40 and column 18 lines 31-55]. Vonesh et al. discloses having a stored length where a maximum length of the covered segment should be 20% or more of the normal deployed length of the covered segment [as described in column 9 lines 5-27 and column 13 lines 19-column 14 line 40]. However, Vonesh et al. does not explicitly disclose the stored length of the inner graft layer being at least twenty-five percent. However, it would have been obvious to one of ordinary skill in the art to try a stored length of at least 25% to achieve a predictable solution with a reasonable expectation of success. Vonesh discloses a step of scrunching the inner graft layer to form corrugations. However, Vonesh does not explicitly disclose the corrugations being formed along a surface of the inner graft layer. Kariniemi et al. however discloses a step of forming corrugations on an inner graft layer (inner layer 12 having corrugations 36, as described in paragraph 0051 and can be seen from Figure 10 in Kariniemi et al.]. Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify the inner graft layer in Vonesh to include corrugations along a surface of the inner graft layer, as taught by Kariniemi et al., as a simple substitution of one known element for another to obtain predictable results. 6. Regarding to Claim 2, Vonesh et al. modified by Kariniemi et al. discloses the method of claim 1, further comprising securing a stent (second element 16, as described in column 5 lines 46-48 and can be seen from Figure 1 in Vonesh et al.) to the graft adjacent the first end of the tube [as described in column 5 lines 46-48 and can be seen from Figure 1 in Vonesh et al.]. 7. Regarding to Claim 3, Vonesh et al. modified by Kariniemi et al. discloses the method of claim 1, wherein the wrapping the film to form the inner graft layer forming the tube includes wrapping more than one layer of the film to form the tube [as described in column 7 lines 65-column 9 line 4 and column 18 lines 3-17 and can be seen from Figure 1 in Vonesh et al.]. 8. Regarding to Claim 4, Vonesh et al. modified by Kariniemi et al. discloses the method of claim 1, further comprising, after the wrapping the film to form the inner graft layer forming the tube and before the scrunching the inner graft layer to form the corrugations in the inner graft layer, heating the wrapped film to set the film in the tube [as described in column 8 lines 10- column 9 line 9 in Vonesh et al.]. 9. Regarding to Claim 5, Vonesh et al. modified by Kariniemi et al. discloses the method of claim 1, further comprising, after the wrapping the outer graft layer over the corrugated inner graft layer to cover the corrugated inner graft layer, bonding the wrapped outer graft layer to the corrugated inner graft layer [as described in column 9 lines 43-55 and column 9 lines 35-40 and column 18 lines 31-55]. 10. Regarding to Claim 6, Vonesh et al. modified by Kariniemi et al. discloses the method of claim 1, wherein the kink resistant graft is configured to resist kinking while experiencing a 90 degree bend with an internal fluid pressure in that the kink resistant graft is configured to maintain cross-sectional area at the apex of the 90 degree bend while experiencing the internal fluid pressure [as described in column 7 lines 39-41 and column 14 lines 30-40 and can be seen from Figure 5 in Vonesh et al.]. However, the combination of Vonesh et al. and Kariniemi et al. does not explicitly disclose having an internal fluid pressure of at least 100 mmHg and being configured to maintain at least 60% of its cross-sectional area at an apex. However, it would have been obvious to one of ordinary skill in the art to try various pressures and dimensions, such as having an internal fluid pressure of at least 100 mmHg and being configured to maintain at least 60% cross-sectional area, to achieve a predictable solution with a reasonable expectation of success. 11. Regarding to Claim 7, Vonesh et al. modified by Kariniemi et al. discloses the method of claim 1, wherein the kink resistant graft having a wall thickness [as can be seen from Figure 1 in Vonesh et al.]. However, the combination of Vonesh et al. and Kariniemi et al. does not explicitly disclose having a wall thickness of no greater than 0.20 nm. However, it would have been obvious to one of ordinary skill in the art to try various dimensions, such various wall thicknesses, to achieve a predictable solution with a reasonable expectation of success. 12. Regarding to Claim 16, Vonesh et al. modified by Kariniemi et al. discloses the method of claim 1, wherein scrunching the inner graft (inner layer film that is slit and helically wrapped in approximately 6 layers) to form corrugations on the inner graft layer (inner layer film that is slit and helically wrapped in approximately 6 layers) comprises forming one or more of folds, creases, undulations or crinkles [as described in column 9 lines 5-11 and can be seen from Figure 1 in Vonesh et al. Note that the prior art discloses a step of “scrunching” which is defined as causing to draw together and crumple (Merriam Webster Online Dictionary). “Crumple” is defined as causing a wrinkle or crease (Merriam Webster Online Dictionary). The prior art of record therefore is interpreted as disclosing “creases”]. Response to Arguments 13. Applicant's arguments filed 12/3/25 have been fully considered but they are not persuasive. Applicant argues the rejection under 103. Applicant argues that it would have not been obvious to modify the device of Vonesh to include corrugations providing a stored length of the corrugated inner graft layer of at least twenty-five percent. Applicant argues that the prior art of Vonesh focuses on providing luminal surface without compromising the luminal surface and modifying the prior art of Vonesh would change the dynamics of the inner layer and specifically the luminal surface. From a review of column 7 lines 39-41 the prior art of Vonesh. Vonesh does disclose “the cover allowing bending of segment 14 without kinking or compromising the luminal surface of the device”. However, applicant’s arguments are directed to speculating that the proposed modification would compromise the apparatus disclosed by Vonesh rather than facts. Arguments by applicant cannot take the place of evidence. There is no evidence that the proposed modification under 103 compromises the apparatus disclosed by Vonesh. The prior art of Vonesh discloses corrugations. Kariniemi further discloses corrugations formed along a surface of the inner graft layer. Furthermore, it would have been obvious to one or ordinary skill in the art to include having a stored length of twenty-five percent, as previously rejected and rejected again above under 103. Applicant has failed to amend the claims to add sufficient structure to overcome the prior art of record. Conclusion All claims are identical to or patentably indistinct from, or have unity of invention with claims in the application prior to the entry of the submission under 37 CFR 1.114 (that is, restriction (including a lack of unity of invention) would not be proper) and all claims could have been finally rejected on the grounds and art of record in the next Office action if they had been entered in the application prior to entry under 37 CFR 1.114. Accordingly, THIS ACTION IS MADE FINAL even though it is a first action after the filing of a request for continued examination and the submission under 37 CFR 1.114. See MPEP § 706.07(b). 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 NIRVANA DEONAUTH whose telephone number is (571)270-5949. The examiner can normally be reached Monday-Friday 9am-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, Thomas Hong can be reached on 5712720993. 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. /NIRVANA DEONAUTH/Primary Examiner, Art Unit 3726
Read full office action

Prosecution Timeline

Sep 17, 2021
Application Filed
Sep 09, 2023
Non-Final Rejection — §103
Dec 12, 2023
Response Filed
Mar 12, 2024
Final Rejection — §103
Apr 17, 2024
Interview Requested
Jun 17, 2024
Response after Non-Final Action
Jul 15, 2024
Examiner Interview (Telephonic)
Aug 19, 2024
Request for Continued Examination
Aug 20, 2024
Response after Non-Final Action
Feb 22, 2025
Non-Final Rejection — §103
May 08, 2025
Interview Requested
May 22, 2025
Examiner Interview Summary
May 22, 2025
Applicant Interview (Telephonic)
Jun 24, 2025
Response Filed
Oct 03, 2025
Final Rejection — §103
Dec 03, 2025
Response after Non-Final Action
Feb 03, 2026
Request for Continued Examination
Feb 22, 2026
Response after Non-Final Action
Apr 04, 2026
Final Rejection — §103 (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

6-7
Expected OA Rounds
69%
Grant Probability
99%
With Interview (+33.7%)
3y 2m
Median Time to Grant
High
PTA Risk
Based on 591 resolved cases by this examiner. Grant probability derived from career allow rate.

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