Prosecution Insights
Last updated: April 19, 2026
Application No. 18/286,864

A VEIN VISUALISATION AID DEVICE

Non-Final OA §112
Filed
Oct 13, 2023
Examiner
NGUYEN, ANDREW H
Art Unit
3741
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Mcas Design Limited
OA Round
1 (Non-Final)
75%
Grant Probability
Favorable
1-2
OA Rounds
3y 4m
To Grant
99%
With Interview

Examiner Intelligence

Grants 75% — above average
75%
Career Allow Rate
662 granted / 882 resolved
+5.1% vs TC avg
Strong +43% interview lift
Without
With
+43.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 4m
Avg Prosecution
27 currently pending
Career history
909
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
46.6%
+6.6% vs TC avg
§102
21.9%
-18.1% vs TC avg
§112
28.8%
-11.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 882 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 . DETAILED ACTION Specification The disclosure is objected to because of the following informalities: on page 7, line 3, “radially0entending gap 7” appears to be in error for “radially extending gap 7”. Appropriate correction is required. Claim Objections Claim 36 is objected to because of the following informalities: “the substate” is apparently in error for “the substrate”. Appropriate correction is required. Claim 44-46 are objected to because of the following informalities: “at least some light sources” is apparently in error for “at least some of the light sources”; “from skin” is apparently in error for “from the skin”. Appropriate correction is required. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(d): (d) REFERENCE IN DEPENDENT FORMS.—Subject to subsection (e), a claim in dependent form shall contain a reference to a claim previously set forth and then specify a further limitation of the subject matter claimed. A claim in dependent form shall be construed to incorporate by reference all the limitations of the claim to which it refers. The following is a quotation of pre-AIA 35 U.S.C. 112, fourth paragraph: Subject to the following paragraph [i.e., the fifth paragraph of pre-AIA 35 U.S.C. 112], a claim in dependent form shall contain a reference to a claim previously set forth and then specify a further limitation of the subject matter claimed. A claim in dependent form shall be construed to incorporate by reference all the limitations of the claim to which it refers. Claim 38-39 are rejected under 35 U.S.C. 112(d) or pre-AIA 35 U.S.C. 112, 4th paragraph, as being of improper dependent form for failing to further limit the subject matter of the claim upon which it depends, or for failing to include all the limitations of the claim upon which it depends. The claim repeats limitations from claim 31. Applicant may cancel the claim(s), amend the claim(s) to place the claim(s) in proper dependent form, rewrite the claim(s) in independent form, or present a sufficient showing that the dependent claim(s) complies with the statutory requirements. 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 31-48 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. In claim 31, “a flexible substrate” (line 5) is indefinite because it is unclear if it is the same or different from the previously defined flexible substrate; “the aperture” lacks antecedent basis; “a needle” (line 12) is indefinite because it is unclear if it is the same or different from the previously defined needle; “a patient’s skin” (line 16) is indefinite because it is unclear if it is the same or different from the previously defined patient’s skin. In claim 34, “an exposed adhesive” is indefinite because it is unclear if it is the same or different from the “adhesive” of claim 31; “a patient’s skin” (line 2) is indefinite because it is unclear if it is the same or different from the previously defined patient’s skin. In claim 35, “the adhesive layer” lacks antecedent basis. In claim 36, “the distal side, and “the proximal side” lack antecedent basis. In claim 38-39, “an interface” is indefinite because it is unclear if it is the same or different from the “interface” of claim 31; “an electrical lead” is indefinite because it is unclear if it is the same or different from the “electrical lead” of claim 31. In claim 47, “the light source emitted radiation” and “the body” lack antecedent basis. Allowable Subject Matter Claims 31-48 would be allowed if all 112 rejections and claim objections were overcome. The following is a statement of reasons for the indication of allowable subject matter: US 2016/0242649 teaches a substrate comprising LED light sources arranged around an opening, the substrate being generally annular and having a radial gap (Fig 1). US 2020/0324061 teaches LED light sources on a substrate, and a driver with physical and electrical engagement through an interface, the interface including an electrical lead (Fig 4; driver 17, lead 18, light sources 16). US 2023/0191042 and US 2016/0287814 teach LED light sources on a flexible substrate. However, the references fail to teach a transparent membrane extending across an opening of the flexible substrate and said membrane is configured to be punctured by a needle, wherein the membrane has adhesive on a distal skin-facing surface, the adhesive allowing the membrane to adhere the membrane to a patient's skin surrounding a the needle in use to provide a hygienic environment around a puncture site, and wherein the substrate is peelable from the membrane after the membrane has adhered to a patient's skin, the membrane being of elastomeric material. WO 2014035588 teaches a flexible substrate and a transparent membrane extending across an opening, the membrane comprising an adhesive (Fig 4-5; substrate 1260, membrane 1262), but fails to teach a plurality of surface mounted LED light sources arranged in a pattern on the flexible substrate near an edge of the substrate. WO 2007106068 teaches a transparent membrane around a puncture site being made of elastomeric material (abstract) but fails to teach a generally annular flexible substrate or a plurality of surface mounted LED light sources arranged in a pattern on the flexible substrate near an edge of the substrate. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ANDREW NGUYEN whose telephone number is (571)270-5063. The examiner can normally be reached 8 am - 4 pm, Monday-Friday. 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, Phutthiwat (Pat) Wongwian can be reached at 571-270-5426. 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. /ANDREW H NGUYEN/Primary Examiner, Art Unit 3741
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Prosecution Timeline

Oct 13, 2023
Application Filed
Feb 20, 2026
Non-Final Rejection — §112
Mar 31, 2026
Response Filed
Mar 31, 2026
Response after Non-Final Action

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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
75%
Grant Probability
99%
With Interview (+43.0%)
3y 4m
Median Time to Grant
Low
PTA Risk
Based on 882 resolved cases by this examiner. Grant probability derived from career allow rate.

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