Prosecution Insights
Last updated: April 19, 2026
Application No. 18/034,392

3 DEGREES OF FREEDOM ANKLE PROSTHESIS

Non-Final OA §112
Filed
Apr 28, 2023
Examiner
STEWART, ALVIN J
Art Unit
3799
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Ozyegin Universitesi
OA Round
1 (Non-Final)
83%
Grant Probability
Favorable
1-2
OA Rounds
3y 0m
To Grant
84%
With Interview

Examiner Intelligence

Grants 83% — above average
83%
Career Allow Rate
894 granted / 1082 resolved
+12.6% vs TC avg
Minimal +1% lift
Without
With
+1.2%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
39 currently pending
Career history
1121
Total Applications
across all art units

Statute-Specific Performance

§101
1.3%
-38.7% vs TC avg
§103
34.3%
-5.7% vs TC avg
§102
39.0%
-1.0% vs TC avg
§112
13.9%
-26.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1082 resolved cases

Office Action

§112
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 . Claim Objections Claim 1, lines 3 and 31 are objected to because of the following informalities: The applicant’s representative must add the word --- movements --- between the words “eversion” and “of” in order to clarify that the Applicant’s representative is referring to a movement. Appropriate correction is required. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 1-20 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Claim 1, line 9 the word: “a surface” is indefinite, since, the Applicant’s representative has not define the surface. It is not clear what surface does the Applicant’s representative is referring to. Does the Applicant is referring to the surface of the ground (floor). Correction is required. Claim 1 recites the limitation "the two identical first pistons" in line 21. The Examiner suggest to remove the word “identical” in order to overcome the rejection. There is insufficient antecedent basis for this limitation in the claim. Claim 1, lines 21-25 are unclear. For example, the wherein clause “wherein a stored energy is in the at least one dorsiflexion member…, the wording in the wherein clause is unclear, such that the intended meaning by the applicant’s representative cannot be readily understood. Claim 1, line 22 the Examiner is not clear what does the applicant’s representative means with the word: “an ankle”. What ankle does the Applicant’s representative is referring to? Does the Applicant’s representative is referring to the previously claimed “ankle prosthesis or orthosis? How does an ankle is moving forward towards a leg during walking? What leg does the applicant’s representative is referring to? Claim 1, line 26, the second piston is indefinite since, only one second piston cannot be connected to the rear parts of the two upper foot parts. See Fig. 5 showing two second pistons connected to the rear parts of the two upper foot parts. The Applicant’s representative must claim the two second pistons. Claim 1, lines 30-31, the phrase: “the heel member allows the inversion and eversion….” Is unclear. The wording of this phrase is unclear. Correction is required. Allowable Subject Matter Claims 1-20 would be allowable if rewritten or amended to overcome the rejection(s) under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), 2nd paragraph, set forth in this Office action. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ALVIN J STEWART whose telephone number is (571)272-4760. The examiner can normally be reached Monday-Friday 8:30AM-6PM EST. 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 Barrett can be reached at 571-272-4746. 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. /ALVIN J STEWART/Primary Examiner, Art Unit 3799 12/02/25
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Prosecution Timeline

Apr 28, 2023
Application Filed
Dec 02, 2025
Non-Final Rejection — §112 (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
83%
Grant Probability
84%
With Interview (+1.2%)
3y 0m
Median Time to Grant
Low
PTA Risk
Based on 1082 resolved cases by this examiner. Grant probability derived from career allow rate.

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