Prosecution Insights
Last updated: October 01, 2026
Application No. 19/022,070

SELECTIVE LASER ETCHING OF LAYERED FLUIDISTORS

Non-Final OA §103
Filed
Jan 15, 2025
Priority
Jun 19, 2020 — provisional 63/041,256 +1 more
Examiner
TIETJEN, MARINA ANNETTE
Art Unit
3799
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Meta Platforms Technologies LLC
OA Round
1 (Non-Final)
75%
Grant Probability
Favorable
1-2
OA Rounds
11m
Est. Remaining
96%
With Interview

Examiner Intelligence

Grants 75% — above average
75%
Career Allowance Rate
732 granted / 976 resolved
+5.0% vs TC avg
Strong +21% interview lift
Without
With
+20.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
15 currently pending
Career history
1000
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
45.1%
+5.1% vs TC avg
§102
28.4%
-11.6% vs TC avg
§112
24.7%
-15.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 976 resolved cases

Office Action

§103
CTNF 19/022,070 CTNF 85108 DETAILED ACTION Notice of Pre-AIA or AIA Status 07-03-aia AIA 15-10-aia The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA. Information Disclosure Statement The information disclosure statement filed 05/01/2025 is acknowledged by the Examiner. Claim Rejections - 35 USC § 103 07-06 AIA 15-10-15 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 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. 07-20-aia AIA 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 of this title, 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. 07-21-aia AIA Claim s 1-2 and 12-13 are rejected under 35 U.S.C. 103 as being unpatentable over Earney et al. (US 20180214869) in view of Hermans et al. (“Selective, Laser-Induced Etching of Fused Silica at High Scan-Speeds Using KOH,” Journal of Laser Micro/Nanoengineering (JLMN), vol. 9(2), 126-131 (2014)) . Earney et al. disclose: 1. A method, comprising: providing a plurality of rigid substrates (108), including a first rigid substrate (102) and a second rigid substrate (104), wherein the plurality of rigid substrates are at least semi-transparent ([0006] discloses example materials, including glass or silica materials); selectively exposing portions of the first rigid substrate and the second rigid substrate to laser radiation (204, 214, fig. 3 directs radiation to layers of the stack); chemically etching portions of the first rigid substrate and the second rigid substrate ([0009] states “the radiation-absorbing material 106 may be chemically etched or molded to have a predetermined structure”); and bonding the first rigid substrate to the second rigid substrate along a common interface (at composite joint 120) to form a fluidic valve (Abstract states “A bonding interface is defined between the radiation-absorbing material and at least one of the first substrate layer or the second substate layer;” and [0063] states “FIG. 17 is a cross-section of a device having liquid valves formed in accordance with an example as the device is being assembled.”). 2. The method of claim 1, wherein the first rigid substrate and the second rigid substrate each comprise a transparent glass [0006]. 4. The method of claim 1, wherein the fluidic valve comprises a body having a chamber (308 or 324 in Fig. 17), and a valve transmission element (332) located within the chamber. 5. The method of claim 4, wherein the body comprises a fluidic source (not shown but connects to inlet 326 to provide flow), and a fluidic drain (not shown but connects to outlet 328 to release flow), each configured to be in fluid communication with the chamber (324). 7. The method of claim 5, wherein a position of the valve transmission element (332) is controllable between a first position (fig. 18) and a second position (fig. 17) using a valve pressure received through the fluidic valve ([0127] states “the actuator 320 is sufficiently near the cavities 308 such that the actuator may increase a pressure within the cavity 308”) such that: when in the first position, the valve transmission element is situated to at least substantially prevent fluid flow between the fluidic source and the fluidic drain (as seen in fig. 18), and when in the second position, the gate transmission element is situated to allow fluid flow between the fluidic source and the fluidic drain (as seen in fig. 17). 12. The method of claim 1, wherein bonding the first rigid substrate to the second rigid substrate comprises exposing at least one of the first rigid substrate and the second rigid substrate to laser radiation in a region proximate to the common interface and decreasing a viscosity within the exposed region ([0101] describes the substrate layer melting due to the laser beam, therefore the viscosity being temporarily reduced as it is melted, then solidifies to form a welded seal). 13. The method of claim 1, wherein bonding the first rigid substrate to the second rigid substrate comprises forming a hermetic seal peripheral to the fluidic valve ([0097] states “The perimeter seal 124 may impede an ingress of bubbles or other liquid from the outer area 170 to the cavity 112 during subsequent operations.”). Earney et al. does not specifically disclose wherein the portions that were chemically etched were exposed to the laser radiation. Hermans et al. teach selective laser induced etching is a known process which offers machining hollow volumes into transparent materials (see summary on first page) with extreme precision and which can be used with reduced harmfulness to the human body (see Introduction, 2 nd column). It would have been obvious to one having ordinary skill in the art to modify the invention of Earney et al., such that the channels are formed specifically with selective laser induced etching, so that the portions that were chemically etched were exposed to the laser radiation, as taught by Hermans et al., for the purpose of using a known process that offers extreme precision and which can be used with reduced harmfulness to the human body . 07-21-aia AIA Claim s 3-5 and 7 are rejected under 35 U.S.C. 103 as being unpatentable over Earney et al. (US 20180214869) in view of Hermans et al. (“Selective, Laser-Induced Etching of Fused Silica at High Scan-Speeds Using KOH,” Journal of Laser Micro/Nanoengineering (JLMN), vol. 9(2), 126-131 (2014)) further in view of Keller et al. (US 20180179051) . Earney et al. taken with Hermans et al. disclose the invention as essentially claimed, except for further comprising coupling the fluidic valve to a fluidic haptics device of an artificial reality system; wherein the valve transmission element is a gate transmission element; and wherein the body comprises a fluidic gate. Keller et al. teach fluid based circuit devices [0007] are known to be coupled with fluidic haptic devices (wearable device such as a glove, [0002]) responsive to a control signal received from an artificial reality system ([0001]-[0002]), wherein the valve transmission element is a gate transmission element (for each gate in gate layer 140); and wherein the body comprises a fluidic gate (in layer 140), for the purpose providing a fluid circuit stack specifically suitable for allowing users interact in a virtual world. It would have been obvious to one of ordinary skill in the art to further modify the invention of Earney et al. taken with Hermans et al., to further include coupling the fluidic valve to a fluidic haptics device of an artificial reality system; wherein the valve transmission element is a gate transmission element; and wherein the body comprises a fluidic gate, as taught by Keller et al., for the purpose of allowing users interact in a virtual world . Allowable Subject Matter 12-151-08 AIA 07-43 12-51-08 Claim s 6 and 8-11 are objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. Conclusion 07-96 AIA The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. US 20150318210, US 20150125665, US 20140224724, US 20130045144 each disclose related methods of forming fluid circuit stacks of a plurality of substrates . Any inquiry concerning this communication or earlier communications from the examiner should be directed to MARINA TIETJEN, whose telephone number is 571-270-5422 . The examiner can normally be reached on Monday-Friday (10:30AM-7:00PM CST). If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisors can be reached by phone. Tom Barrett can be reached at 571-272-4746 , Ken Rinehart can be reached at 571-272-4881, and Craig Schneider can be reached at 571-272-3607. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /MARINA A TIETJEN/Primary Examiner, Art Unit 3753 Application/Control Number: 19/022,070 Page 2 Art Unit: 3799 Application/Control Number: 19/022,070 Page 3 Art Unit: 3799 Application/Control Number: 19/022,070 Page 4 Art Unit: 3799 Application/Control Number: 19/022,070 Page 5 Art Unit: 3799 Application/Control Number: 19/022,070 Page 6 Art Unit: 3799
Read full office action

Prosecution Timeline

Jan 15, 2025
Application Filed
Mar 18, 2026
Non-Final Rejection mailed — §103 (current)

Precedent Cases

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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
96%
With Interview (+20.8%)
2y 7m (~11m remaining)
Median Time to Grant
Low
PTA Risk
Based on 976 resolved cases by this examiner. Grant probability derived from career allowance rate.

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