Prosecution Insights
Last updated: October 04, 2026
Application No. 18/612,157

VALVE SYSTEM FOR HYDRAULIC PROSTHETIC DEVICE

Non-Final OA §102
Filed
Mar 21, 2024
Priority
Apr 07, 2023 — provisional 63/494,998
Examiner
BLASS, PARIS MARIE
Art Unit
Tech Center
Assignee
College Park Industries Inc.
OA Round
1 (Non-Final)
54%
Grant Probability
Moderate
1-2
OA Rounds
1y 0m
Est. Remaining
94%
With Interview

Examiner Intelligence

Grants 54% of resolved cases
54%
Career Allowance Rate
18 granted / 33 resolved
-5.5% vs TC avg
Strong +40% interview lift
Without
With
+39.6%
Interview Lift
resolved cases with interview
Typical timeline
3y 7m
Avg Prosecution
38 currently pending
Career history
77
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
53.1%
+13.1% vs TC avg
§102
30.7%
-9.3% vs TC avg
§112
15.2%
-24.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 33 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. Election/Restrictions Applicant’s election without traverse of Group II, Claims 6-14 in the reply filed on 08/07/2026 is acknowledged. Claims 1-5 and 15-20 have been withdrawn from consideration. 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. Claims 6-14 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by US 20100023133 A1 (hereafter –Fairbanks--). Regarding Claim 6, Fairbanks discloses a hydraulic valve assembly comprising: a valve core (250) having one or more valve core ports (251, see paragraph [0097], see also annotated valve core ports in Figures 26-28 below); and a valve sleeve (260) surrounding the valve core so that the valve core is rotatable relative to the valve sleeve (see paragraph [0097], see also valve sleeve in Figures 26-28), the valve sleeve comprising one or more valve sleeve ports (261, see paragraph [0097], see also annotated valve sleeve ports in Figures 26-28 below); wherein a hydraulic resistance of the valve assembly varies approximately linearly with a change in valve position of the valve assembly caused by rotating the valve core relative to the valve sleeve to vary an alignment between the one or more valve core ports and one or more valve sleeve ports (see paragraphs [0097], [0084], [0085], and [0086] denoting that valve core 250 is turned by valve electric motor 270, three-way valve 210 assumes one of at least three positions, each position having a different resistance fluid fluid). PNG media_image1.png 594 767 media_image1.png Greyscale PNG media_image2.png 581 552 media_image2.png Greyscale Regarding Claims 7, 8, and 10, Fairbanks discloses a circular port and a linear plane that is perpendicular to the axis of the valve assembly (see annotated plane and axis in Figure 27 below). The plane overlaps with a portion of the circle as annotated in Figure 27 below. The exact point in which the plane intersects with the circle is considered to have a 0 degree angle with the point of the circle it is overlapping with. As you move along the circle from the overlapping point, the circle angle with respect to the plane smoothly increases until a peak angle with respect to the plane at the overlapping point. The angle must therefore pass through 3 degrees as it increases. The overlapping point (0 degrees) then extends to another point on the circle, in which that point has a 3 degree angle with the plane. The portion between the 0 degree point (overlapping point) and the point in which the circle has a 3 degree curve, is what is being considered to be the “linear portion,” as this would be a very small portion of the circle in which the curvature would be so miniscule that it could be considered to be linear. “Portion” can be any portion, big or small, of any part of the port. The Examiner recommends narrowing this limitation to be more specific to the structure of your device. PNG media_image3.png 536 585 media_image3.png Greyscale Regarding Claim 7, Fairbanks discloses the hydraulic valve assembly of Claim 6, wherein at least one of the one or more valve sleeve ports is a curved valve sleeve port comprising a rounded portion and a linear portion (see annotated curved and linear portions in Figure 27 above, see also the explanation above). Regarding Claim 8, Fairbanks discloses the hydraulic valve assembly of Claim 7, wherein the linear portion extends at an angle relative to a plane transverse to an axis of the valve assembly (see annotated plane in Figure 27 above). Regarding Claim 10, Fairbanks discloses the hydraulic valve assembly of Claim 8, wherein the angle is equal to or between 2 and 3 degrees (see explanation above). Regarding Claim 9, Fairbanks discloses the hydraulic valve assembly of Claim 8, wherein the plane is perpendicular the axis of the valve assembly (see annotated axis and plane in Figure 27 above). Regarding Claim 11, Fairbanks discloses the hydraulic valve assembly of Claim 6, wherein at least one of the one or more valve sleeve ports is a circular port (see also valve sleeve ports in Figures 26-28). Regarding Claim 12, Fairbanks discloses the hydraulic valve assembly of Claim 6, wherein the one or more valve core ports are multiple valve core ports (see also valve core ports in Figures 26-28, see paragraph [0097]). Regarding Claim 13, Fairbanks discloses the hydraulic valve assembly of Claim 12, wherein at least one of the multiple valve core ports is oblong in shape (see also valve core ports in Figures 26-28). Regarding Claim 14, Fairbanks discloses the hydraulic valve assembly of Claim 13, wherein the multiple valve core ports are configured to at least partially overlap with the one or more valve sleeve ports (see positions in Figures 29A-29D above, some showcasing positions in which the ports overlap). Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. US 20220296393 A1: This reference discloses a hydraulic system with a valve core and sleeve, both having ports that overlap with linear up and down movement to control alignment and fluid flow resistance. US 20150134081 A1: This reference discloses a hydraulic valve system with ports and resistance fluid control. Any inquiry concerning this communication or earlier communications from the examiner should be directed to PARIS MARIE BLASS whose telephone number is (703)756-5375. The examiner can normally be reached Monday - Thursday 9 a.m. - 7 p.m. ET. 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. /PARIS MARIE BLASS/Examiner, Art Unit 3774 /SARAH W ALEMAN/Primary Examiner, Art Unit 3774
Read full office action

Prosecution Timeline

Mar 21, 2024
Application Filed
Sep 18, 2026
Non-Final Rejection mailed — §102 (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
54%
Grant Probability
94%
With Interview (+39.6%)
3y 7m (~1y 0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 33 resolved cases by this examiner. Grant probability derived from career allowance rate.

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