Prosecution Insights
Last updated: July 17, 2026
Application No. 19/191,989

LITHOGRAPHICALLY PATTERNED ELECTRICALLY CONDUCTIVE HYDROGELS, PHOTO-CURABLE COMPOSITIONS, AND ELASTOMERS FORMED FROM SUCH COMPOSITIONS

Non-Final OA §103
Filed
Apr 28, 2025
Priority
Oct 27, 2017 — provisional 62/578,264 +3 more
Examiner
CHAMPION, RICHARD DAVID
Art Unit
1737
Tech Center
1700 — Chemical & Materials Engineering
Assignee
The Board of Trustees of the Leland Stanford Junior University
OA Round
2 (Non-Final)
44%
Grant Probability
Moderate
2-3
OA Rounds
2y 7m
Est. Remaining
53%
With Interview

Examiner Intelligence

Grants 44% of resolved cases
44%
Career Allowance Rate
55 granted / 124 resolved
-20.6% vs TC avg
Moderate +9% lift
Without
With
+8.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 10m
Avg Prosecution
40 currently pending
Career history
172
Total Applications
across all art units

Statute-Specific Performance

§103
86.0%
+46.0% vs TC avg
§102
13.2%
-26.8% vs TC avg
§112
0.3%
-39.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 124 resolved cases

Office Action

§103
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 . Election/Restrictions 1. Applicant’s election without traverse of Group I, i.e. Claims 2-11, in the reply filed on 02 April 2026 is acknowledged. 2. Claims 12-21 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected Groups II and II, there being no allowable generic or linking claim. Election was made without traverse in the reply filed on 02 April 2026. 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: 4. 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. 5. Claims 2-3, 5-9 and 11 are rejected under 35 U.S.C. 103 as being unpatentable over Yamashita et al. (United States Patent Publication No. US 2015/0064909 A1), hereinafter Yamashita; in view of DeSimone et al. (United States Patent Publication No. US 2013/0011618 A1), hereinafter DeSimone 1. 6. Regarding Claims 2-3, 5-9 and 11, Yamashita teaches (Paragraph [0026]) a photo-curable composition. Yamashita teaches (Paragraphs [0059-0136]) a fluorinated monomer comprising cross-linkable end groups. Yamashita teaches (Paragraphs [0169-0195]) a photoinitiator. Yamashita teaches (Paragraph [0136]) wherein the fluorinated monomer has a molecular weight that is 2 to 20 kg/mol. Yamashita teaches (Paragraph [0219]) the fluorinated monomer comprises a perfluoropolyether moiety. Yamashita teaches (Paragraph [0136]) wherein the fluorinated monomer has a molecular weight that is 12 to 20 kg/mol. Yamashita teaches (Paragraphs [0093-0131]) wherein the end groups comprise methacrylate groups. Yamashita teaches (Paragraphs [0133-0134]) wherein the photo-curable composition further comprises a solvent. Yamashita teaches (Paragraphs [0203-0204]) wherein the solvent is a fluorinated solvent. Yamashita teaches (Paragraphs [0176 and 0182]) wherein the photoinitiator is selected from bis(2,4,6-trimethylbenzoyl)-phenylphosphineoxide and α-hydroxycyclohexyl phenyl ketone. 7. However, Yamashita fails to explicitly teach the photo-curable composition can be cured to form a fluorinated elastomer that exhibits a maximum tensile strain of at least 10%. Furthermore, Yamashita fails to explicitly teach the fluorinated elastomer exhibits a maximum tensile strain of at least 200%. 8. DeSimone 1 teaches (Paragraphs [0233-0234]) a photo-curable composition of a fluorinated monomer, perfluoropolyether (PFPE), comprising cross-linkable end groups and a photoinitiator, 2,2-dimethoxy-2-phenylacetophenone (DMPA). DeSimone 1 teaches (Paragraphs [0237-0238 and 0245]) the photo-curable composition can be cured to form a fluorinated elastomer that exhibits a maximum tensile strain of at least 10%. DeSimone 1 teaches (Paragraph [0134 and 0252]) that said tensile strain of a cured fluorinated elastomer allow for sufficient tensile strength while maintaining sufficient flexibility. 10. It would have been prima facie obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to have modified Yamashita to incorporate the teachings of DeSimone 1 wherein the photo-curable composition can be cured to form a fluorinated elastomer that exhibits a maximum tensile strain of at least 10%. Doing so would have resulted in sufficient tensile strength while maintaining sufficient flexibility, as recognized by DeSimone 1. 11. Given that the prior art teaches a composition within the scope of the claims of the present application and DeSimone 1 teaches the utility in modifying tensile strain of the composition, Yamashita in view of DeSimone 1 teach the fluorinated elastomer exhibiting a maximum tensile strain of at least 200%. MPEP § 2112.01(II) states: “A chemical composition and its properties are inseparable. Therefore, if the prior art teaches the identical chemical structure, the properties applicant discloses and/or claims are necessarily present.” 12. Claim 4 is rejected under 35 U.S.C. 103 as being unpatentable over Yamashita et al. (United States Patent Publication No. US 2015/0064909 A1), hereinafter Yamashita; in view of DeSimone et al. (United States Patent Publication No. US 2013/0011618 A1), hereinafter DeSimone 1; in further view of DeSimone et al. (United States Patent Publication No. US 2009/0304992 A1), hereinafter DeSimone 2. 13. Regarding Claim 4, Yamashita in view of DeSimone 1 teach all limitations of Claim 2. However, Yamashita in view of DeSimone 1 fail to explicitly teach wherein the fluorinated elastomer exhibits a Young's modulus less than or equal to 200 kPa. 14. DeSimone 2 teaches (Paragraph [0022]) the fluorinated elastomer exhibits a Young's modulus less than or equal to 200 kPa. DeSimone 2 teaches (Paragraphs [0022]) said Young's modulus results in the fluorinated elastomer maintaining sufficient flexibility. 15. It would have been prima facie obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to have modified Yamashita in view of DeSimone 1 to incorporate the teachings of DeSimone 2 wherein the fluorinated elastomer exhibits a Young's modulus less than or equal to 200 kPa. Doing so would have resulted in sufficient flexibility, as recognized by DeSimone 2. 16. Claim 10 is rejected under 35 U.S.C. 103 as being unpatentable over Yamashita et al. (United States Patent Publication No. US 2015/0064909 A1), hereinafter Yamashita; in view of DeSimone et al. (United States Patent Publication No. US 2013/0011618 A1), hereinafter DeSimone 1; in further view of Abe et al. (World Intellectual Property Organization (WIPO) Publication No. WO 2015/002204 A1), hereinafter Abe. 17. Regarding Claim 10, Yamashita in view of DeSimone 1 teach all limitations of Claim 2. However, Yamashita in view of DeSimone 1 fail to explicitly teach wherein the fluorinated solvent is selected from 1,3-bis(trifluoromethyl)benzene, 1,1,1,3,3-pentafluorobutane, and perfluorotributylamine. 18. Abe teaches (Paragraph [0022]) the fluorinated solvent is perfluorotributylamine, as well as hydrofluoroether. Yamashita teaches (Paragraph [0204]) the fluorinated solvent is hydrofluoroether. 19. It would have been prima facie obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to have modified Yamashita in view of DeSimone 1 to incorporate the teachings of Abe wherein the fluorinated solvent is perfluorotributylamine. Doing so would be simple substitution of the fluorinated solvent, taught by both Yamashita and Abe, with the fluorinated solvent perfluorotributylamine, taught by Abe. Both fluorinated solvents were known in the art and a person having ordinary skill in the art could have substituted one known element, fluorinated solvent hydrofluoroether, with another, fluorinated solvent perfluorotributylamine, and the results of the substitution would have been predictable. Conclusion 20. Any inquiry concerning this communication should be directed to RICHARD D CHAMPION at telephone number (571) 272-0750. The examiner can normally be reached on 8 a.m. - 5 p.m. Mon-Fri EST. 21. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, KEITH D HENDRICKS can be reached at (571) 272-1401. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. 22. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://portal.uspto.gov/external/portal. Should you have questions about access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). 23. 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. /Keith D. Hendricks/Supervisory Patent Examiner, Art Unit 1733 /R.D.C./Examiner, Art Unit 1737
Read full office action

Prosecution Timeline

Apr 28, 2025
Application Filed
Oct 02, 2025
Non-Final Rejection mailed — §103
Oct 30, 2025
Response Filed
Jun 18, 2026
Non-Final Rejection mailed — §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

2-3
Expected OA Rounds
44%
Grant Probability
53%
With Interview (+8.8%)
3y 10m (~2y 7m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 124 resolved cases by this examiner. Grant probability derived from career allowance rate.

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