Prosecution Insights
Last updated: July 17, 2026
Application No. 18/056,179

DEVICE AND METHOD FOR NON-INVASIVE ANALYSIS OF PARTICLES DURING MEDICAL VENTILATION

Final Rejection §112
Filed
Nov 16, 2022
Priority
Feb 08, 2012 — SE 1250093-0 +3 more
Examiner
BERHANU, ETSUB D
Art Unit
3791
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Pexa AB
OA Round
6 (Final)
66%
Grant Probability
Favorable
7-8
OA Rounds
0m
Est. Remaining
90%
With Interview

Examiner Intelligence

Grants 66% — above average
66%
Career Allowance Rate
525 granted / 802 resolved
-4.5% vs TC avg
Strong +25% interview lift
Without
With
+24.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 6m
Avg Prosecution
38 currently pending
Career history
845
Total Applications
across all art units

Statute-Specific Performance

§101
14.2%
-25.8% vs TC avg
§103
49.4%
+9.4% vs TC avg
§102
5.6%
-34.4% vs TC avg
§112
21.1%
-18.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 802 resolved cases

Office Action

§112
DETAILED ACTION Notice of Pre-AIA or AIA Status The present application is being examined under the pre-AIA first to invent provisions. Claim Interpretation The following is a quotation of 35 U.S.C. 112(f): (f) Element in Claim for a Combination. – An element in a claim for a combination may be expressed as a means or step for performing a specified function without the recital of structure, material, or acts in support thereof, and such claim shall be construed to cover the corresponding structure, material, or acts described in the specification and equivalents thereof. The following is a quotation of pre-AIA 35 U.S.C. 112, sixth paragraph: An element in a claim for a combination may be expressed as a means or step for performing a specified function without the recital of structure, material, or acts in support thereof, and such claim shall be construed to cover the corresponding structure, material, or acts described in the specification and equivalents thereof. This application includes one or more claim limitations that do not use the word “means,” but are nonetheless being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, because the claim limitation(s) uses a generic placeholder that is coupled with functional language without reciting sufficient structure to perform the recited function and the generic placeholder is not preceded by a structural modifier. Such claim limitation(s) is/are: “particle detector” and “particle collector”. Because this/these claim limitation(s) is/are being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, it/they is/are being interpreted to cover the corresponding structure described in the specification as performing the claimed function, and equivalents thereof. If applicant does not intend to have this/these limitation(s) interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, applicant may: (1) amend the claim limitation(s) to avoid it/them being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph (e.g., by reciting sufficient structure to perform the claimed function); or (2) present a sufficient showing that the claim limitation(s) recite(s) sufficient structure to perform the claimed function so as to avoid it/them being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph. A review of the specification shows that the following appears to be the corresponding structure: According to page 12 of Applicant’s specification the particle detector may be any particle counter (see the following description " The particle detection unit may be, for example, a particle counter such as a Grimm 1.108 optical particle counter (Grimm Aerosol Technik, Ainring, Germany), capable of counting, and sizing particles in 15 size intervals from 0.3 to 20 micrometre. But other optical particle counters such as a Grimm 1.107 and 1.109 may be used. Other manufacturers such as TSI have particle sizers but also time of flight equipment that may be used as particle detection units 10. Other options may be, Non-optical, electrostatically, conductance, condensation particle counters, Quartz Crystal Microbalance (QCM), Surface Plasmon Resonance (SPR) or surface acoustic-wave (SAW) etc. "); according to page 4 of Applicant’s specification, the particle collector corresponds to an impactor. Claim Rejections - 35 USC § 112 The following is a quotation of the first paragraph of 35 U.S.C. 112(a): (a) IN GENERAL.—The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor or joint inventor of carrying out the invention. The following is a quotation of the first paragraph of pre-AIA 35 U.S.C. 112: The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor of carrying out his invention. Claims 1, 2, 4-9, 11, and 13-21 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as failing to comply with the written description requirement. The claim(s) contains subject matter which was not described in the specification in such a way as to reasonably convey to one skilled in the relevant art that the inventor or a joint inventor, or for applications subject to pre-AIA 35 U.S.C. 112, the inventor(s), at the time the application was filed, had possession of the claimed invention. Regarding claims 1, 9, and 13, the originally filed disclosure fails to provide support for “wherein real time is once every 1 to 4 seconds”. While paragraph [0059] of the published specification mentions a sample time “such as 1 second” or “2 seconds, such as 4 seconds, such as 10 seconds”, these time references are related to a sample time to detect a sufficient number of particles before updating an interface of a particle detection unit; sampling data every 1-4 seconds is not the same as performing an analysis every 1-4 seconds, nor is it the same as providing a display or warning once every 1-4 seconds. Paragraph [0090] states that a size distribution is produced “every six seconds”; which provides support for performing an analysis once every 6 seconds. If a size distribution which is analyzed to determine a lung condition is produced every six seconds, it is unclear how a real time analysis would occur every 1 to 4 seconds. Claims not explicitly rejected above are rejected due to their dependence on a rejected base claim. Response to Arguments Applicant’s arguments, filed 28 April 2026, have been fully considered. Regarding the rejections of the claims under 35 U.S.C. 112, first paragraph, Applicant’s arguments are not persuasive. “Continuously quantifying” does not provide support for a real time analysis being once every 1 to 4 seconds, nor does reciting a “sample time” of “1 second”, “2 seconds”, or “4 seconds”. As noted in paragraph 5 above, and in paragraph 7 of the Non-Final Rejection mailed out 28 January 2026, a sampling time is not the same as an analysis time. A sampling time refers to how often data is sampled/acquired. It does not refer to how often data is analyzed. While the specification provides support for sampling data once every 1 to 4 seconds, it fails to provide support for analyzing data once every 1 to 4 seconds or providing a warning once every 1 to 4 seconds. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Mitton et al.’521 (US Pub No. 2008/0202521 – previously cited) in view of Olin et al.’635 (US Pub No. 2010/0297635 – previously cited) further in view of Liao et al.’007 (US Pub No. 2008/0243007 – previously cited), as discussed in paragraph 7 of the Final Rejection mailed out 11 July 2025, is the closest prior art. The combination of references teaches all of the elements of claims 1 and 13, with the exception of “wherein real time is once every 1 to 4 seconds”. THIS ACTION IS MADE FINAL. 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 ETSUB D BERHANU whose telephone number is (571)270-5410. The examiner can normally be reached Mon-Fri 9:00am-5:30pm 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, Jennifer Robertson can be reached at (571) 272-5001. 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. /ETSUB D BERHANU/Primary Examiner, Art Unit 3791
Read full office action

Prosecution Timeline

Show 9 earlier events
Apr 14, 2025
Response Filed
Jul 11, 2025
Final Rejection mailed — §112
Dec 11, 2025
Request for Continued Examination
Dec 21, 2025
Response after Non-Final Action
Jan 28, 2026
Non-Final Rejection mailed — §112
Apr 28, 2026
Response Filed
May 15, 2026
Final Rejection mailed — §112
Jul 16, 2026
Examiner Interview Summary

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

7-8
Expected OA Rounds
66%
Grant Probability
90%
With Interview (+24.8%)
3y 6m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 802 resolved cases by this examiner. Grant probability derived from career allowance rate.

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