Prosecution Insights
Last updated: August 12, 2026
Application No. 18/659,257

FILTER FOR FLUIDIC APPLICATIONS

Final Rejection §103
Filed
May 09, 2024
Priority
May 11, 2023 — LU LU103123
Examiner
BALLMAN, CHRISTOPHER D
Art Unit
3753
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Stratec SE
OA Round
4 (Final)
77%
Grant Probability
Favorable
5-6
OA Rounds
3m
Est. Remaining
98%
With Interview

Examiner Intelligence

Grants 77% — above average
77%
Career Allowance Rate
373 granted / 485 resolved
+6.9% vs TC avg
Strong +21% interview lift
Without
With
+20.9%
Interview Lift
resolved cases with interview
Typical timeline
2y 6m
Avg Prosecution
20 currently pending
Career history
511
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
49.6%
+9.6% vs TC avg
§102
30.6%
-9.4% vs TC avg
§112
19.2%
-20.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 485 resolved cases

Office Action

§103
DETAILED ACTION Final Rejection 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 . Response to Amendment The amendment filed 2 July 2026 has been entered. Claims 1-15 remain pending in the application. Claim Rejections - 35 USC § 103 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. 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: 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. Claims 1-5 and 7-15 are rejected under 35 U.S.C. 103 as being unpatentable over Lilly (U.S. Patent 6,474,289) in view of Aoki (U.S. Patent Publication 2012/0255521), in further view of Wyhler (U.S. Patent 10,744,428). Regarding claim 1, Lilly discloses a fluidic system 20, comprising a single sensor 56 a pressure sensor 56 (Col. 7 ln 28-34, a differential pressure transducer (which can be used as sensor 56) requires the sensor to be located upstream and downstream of the element that the pressure drop is being measured across, in this instance the filter) which is arranged between a pump 24 for moving a fluid in a fluid path and a filter 30a/30b and a heating element 74 (FIG. 1; Col. 4 ln 29-Col. 5 ln 7). Lilly is silent regarding the sensor being a single pressure sensor which measures the fluid pressure downstream of the pump and upstream of the filter; and the heating element being a part of the filter. However, Aoki teaches positioning a single pressure sensor 5 upstream of a filter 21 and downstream of a pump 8 such that the sensor measures the pressure between the pump and filter (FIG. 1; Paragraph 17). Therefore, it would have been obvious to one of ordinary skill in the art at the time of filing, to modify Lilly by positioning a single pressure sensor downstream of the pump and upstream from the filter, as taught by Aoki, for the purpose of measuring the pressure at a position that provides operational information to the controller in order to achieve the desired flow characteristics. Furthermore, Wyhler teaches a filter 10 comprising a heating element in the form of a heating foil 52 (FIG. 3; Col. 6 ln 13-30). Therefore, it would have been obvious to one of ordinary skill in the art at the time of filing, to modify Lilly by positioning the heating element within the filter in the form of a heatable foil, as taught by Wyhler, since it has been held that mere relocation of an element would not have modified the operation of the device and it has been held that use of suitable equivalent structures involves only routine skill in the art. Regarding claim 2, Lilly, as modified above, discloses the claimed invention substantially as claimed, as set forth above in claim 1. Lilly further discloses the system comprises a plurality of parallel arranged filters (FIG. 1). Regarding claim 3, Lilly, as modified above, discloses the claimed invention substantially as claimed, as set forth above in claim 1. Lilly further discloses a temperature sensor 58 which is electrically connected to a controller 50 for controlling the temperature of the respective filter by adjusting the heating element to a defined temperature (FIG. 1; Col. 7 ln 21-56). Lilly is silent regarding the temperature sensor being located within the filter. It would have been obvious to one of ordinary skill in the art at the time of filing, to modify Lilly by positioning the temperature sensor within the filter, since it has been held that mere relocation of an element would not have modified the operation of the device. Regarding claim 4, Lilly, as modified above, discloses the claimed invention substantially as claimed, as set forth above in claim 1. Lilly/Wyhler further teaches the filter comprises a heatable foil 52 for heating (Wyhler FIG. 1, 3; Col. 5 ln 58-Col. 6 ln 30). Regarding claim 5, Lilly, as modified above, discloses the claimed invention substantially as claimed, as set forth above in claim 4. Lilly further discloses a controller 50 comprises stored data of the solubility of fluids which serves as set points for heating of the filter (FIG. 5; Col. 9 ln 10-Col. 10 ln 5). Regarding claim 7, Lilly, as modified above, discloses the claimed invention substantially as claimed, as set forth above in claim 3. Lilly further discloses the pressure sensor is connected to the controller for transmitting measured pressures, and wherein the controller is connected to the pump for stopping the fluid flow in case of a measured pressure above a defined threshold (Col. 7 ln 57-Col. 8 ln 13). Regarding claim 8, Lilly, as modified above, discloses the claimed invention substantially as claimed, as set forth above in claim 1. Lilly further discloses the filter is insulated (by the body 32) (FIG. 1). Regarding claim 9, Lilly discloses a method for moving of a fluid in a fluid path of a fluidic system, comprising the steps of: - Providing the fluid to the fluidic path; - Moving the fluid in a defined direction with a pump 24; - Sensing the pressure in the fluidic path with a single sensor 56 which is arranged downstream of the pump; - Heating the fluid in the fluidic path in a filter 30a/30b a heating element 74 which is arranged downstream of the pressure sensor; - Providing the filtered fluid downstream of the filter (FIG. 1; Col. 4 ln 29-Col. 5 ln 7). Lilly is silent regarding the sensor being a single pressure sensor positioned downstream of the pump and upstream of the filter; and the heating element being a part of the filter. However, Aoki teaches positioning a single pressure sensor 5 upstream of a filter 21 and downstream of a pump 8 such that the sensor measures the pressure between the pump and filter (FIG. 1; Paragraph 17). Therefore, it would have been obvious to one of ordinary skill in the art at the time of filing, to modify Lilly by positioning a single pressure sensor downstream of the pump and upstream from the filter, as taught by Aoki, for the purpose of measuring the pressure at a position that provides operational information to the controller in order to achieve the desired flow characteristics. Furthermore, Wyhler teaches a filter 10 comprising a heating element in the form of a heating foil 52 (FIG. 3; Col. 6 ln 13-30). Therefore, it would have been obvious to one of ordinary skill in the art at the time of filing, to modify Lilly by positioning the heating element within the filter in the form of a heatable foil, as taught by Wyhler, since it has been held that mere relocation of an element would not have modified the operation of the device and it has been held that use of suitable equivalent structures involves only routine skill in the art. Regarding claim 10, Lilly, as modified above, discloses the claimed invention substantially as claimed, as set forth above in claim 9. Lilly/Wyhler further teaches the fluid is heated in the filter by a heatable foil 52 (Wyhler FIG. 1, 3; Col. 5 ln 58-Col. 6 ln 30). Regarding claim 11, Lilly, as modified above, discloses the claimed invention substantially as claimed, as set forth above in claim 9. Lilly further discloses a temperature sensor 58 of the filter is connected to a controller 50 for measuring the temperature in the filter (FIG. 1; Col. 7 ln 21-56). Lilly is silent regarding the temperature sensor being located within the filter. It would have been obvious to one of ordinary skill in the art at the time of filing, to modify Lilly by positioning the temperature sensor within the filter, since it has been held that mere relocation of an element would not have modified the operation of the device. Regarding claim 12, Lilly, as modified above, discloses the claimed invention substantially as claimed, as set forth above in claim 11. Lilly further discloses the heating elements of the filter are connected to the controller for adjusting the filter to a defined temperature depending on the measured temperature in the filter (FIG. 1; Col. 7 ln 21-56). Regarding claim 13, Lilly, as modified above, discloses the claimed invention substantially as claimed, as set forth above in claim 12. Lilly further discloses the defined temperature is adjusted to the solubility of the fluid in the fluidic path (FIG. 5; Col. 9 ln 10-Col. 10 ln 5). Regarding claim 14, Lilly, as modified above, discloses the claimed invention substantially as claimed, as set forth above in claim 12. Lilly further discloses the controller comprises a set of data comprising the solubility of fluids and uses the set of data for adjusting the temperature of the filter to the solubility of the fluid present in the fluidic path (FIG. 5; Col. 7 ln 57-Col. 8 ln 13, Col. 9 ln 10-Col. 10 ln 5). Regarding claim 15, Lilly, as modified above, discloses the claimed invention substantially as claimed, as set forth above in claim 9. Lilly further discloses the step of stopping the pump which is connected to the controller, when the pressure sensor which is connected to a controller 50 transmits data of a pressure in the fluidic path exceeding or falling below a defined threshold (Col. 7 ln 57-Col. 8 ln 13). Claim 6 is rejected under 35 U.S.C. 103 as being unpatentable over Lilly in view of Wyhler in further view of Strombach (U.S. Patent Publication 2020/0047299). Regarding claim 6, Lilly, as modified above, discloses the claimed invention substantially as claimed, as set forth above in claim 1. Lilly is silent regarding a vibrating actuator is attached to the filter or each filter of a plurality of filters. However, Strombach teaches a vibrating actuator is attached to the filter or each filter of a plurality of filters (paragraph 25). Therefore, it would have been obvious to one of ordinary skill in the art at the time of filing, to modify Lilly by adding a vibrating actuator to the filter, as taught by Strombach, for the purpose of dislodging any particulates that may get stuck in the filter. Response to Arguments Applicant’s arguments, see page 6 of applicant’s response, filed 2 July 2026, with respect to the rejection(s) of claim(s) 1 and 9 under 35 U.S.C. 103 as being unpatentable over Lilly (U.S. Patent 6,474,289) in view of Worthington (U.S. Patent 8,844,503), in further view of Wyhler (U.S. Patent 10,744,428) have been fully considered and are persuasive. Therefore, the rejection has been withdrawn. However, upon further consideration, a new ground(s) of rejection, necessitated by amendment, is made in view of 35 U.S.C. 103 as being unpatentable over Lilly (U.S. Patent 6,474,289) in view of Aoki (U.S. Patent Publication 2012/0255521), in further view of Wyhler (U.S. Patent 10,744,428). Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). 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 CHRISTOPHER D BALLMAN whose telephone number is (571)272-9984. The examiner can normally be reached Mon-Fri 6:00-3:00. 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, Craig M Schneider can be reached at 571-272-3607. 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. /CHRISTOPHER D BALLMAN/Examiner, Art Unit 3753 /CRAIG M SCHNEIDER/Supervisory Patent Examiner, Art Unit 3753
Read full office action

Prosecution Timeline

Show 1 earlier event
Jun 11, 2025
Non-Final Rejection mailed — §103
Oct 07, 2025
Response Filed
Nov 05, 2025
Final Rejection mailed — §103
Mar 04, 2026
Request for Continued Examination
Mar 23, 2026
Response after Non-Final Action
Mar 27, 2026
Non-Final Rejection mailed — §103
Jul 02, 2026
Response Filed
Jul 24, 2026
Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12698857
Coupling
1y 10m to grant Granted Aug 04, 2026
Patent 12680615
MULTI-WAY VALVE WITH SINGLE VALVE ROTOR
2y 6m to grant Granted Jul 14, 2026
Patent 12680430
UNIBODY BYPASS PLUNGER AND VALVE CAGE
1y 7m to grant Granted Jul 14, 2026
Patent 12669186
Fluid Valve
4y 4m to grant Granted Jun 30, 2026
Patent 12669750
SYSTEM AND METHOD FOR SUPPLYING AND DISPENSING BUBBLE-FREE PHOTOLITHOGRAPHY CHEMICAL SOLUTIONS
2y 11m to grant Granted Jun 30, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

5-6
Expected OA Rounds
77%
Grant Probability
98%
With Interview (+20.9%)
2y 6m (~3m remaining)
Median Time to Grant
High
PTA Risk
Based on 485 resolved cases by this examiner. Grant probability derived from career allowance rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month