Prosecution Insights
Last updated: April 19, 2026
Application No. 18/420,245

TEMPERATURE MEASURING DEVICE, LITHOGRAPHY APPARATUS AND METHOD FOR MEASURING A TEMPERATURE

Non-Final OA §102§103
Filed
Jan 23, 2024
Examiner
GIBSON, RANDY W
Art Unit
2855
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Carl Zeiss Smt GmbH
OA Round
1 (Non-Final)
76%
Grant Probability
Favorable
1-2
OA Rounds
2y 7m
To Grant
98%
With Interview

Examiner Intelligence

Grants 76% — above average
76%
Career Allow Rate
1010 granted / 1338 resolved
+7.5% vs TC avg
Strong +22% interview lift
Without
With
+22.5%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
25 currently pending
Career history
1363
Total Applications
across all art units

Statute-Specific Performance

§101
4.8%
-35.2% vs TC avg
§103
44.4%
+4.4% vs TC avg
§102
29.3%
-10.7% vs TC avg
§112
14.3%
-25.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1338 resolved cases

Office Action

§102 §103
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. Drawings The drawings are objected to because the boxes in Figure 10 should have brief descriptive legends to aid in understanding what is going on. See 37 CFR 1.84(o). Corrected drawing sheets in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. The figure or figure number of an amended drawing should not be labeled as “amended.” If a drawing figure is to be canceled, the appropriate figure must be removed from the replacement sheet, and where necessary, the remaining figures must be renumbered and appropriate changes made to the brief description of the several views of the drawings for consistency. Additional replacement sheets may be necessary to show the renumbering of the remaining figures. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either “Replacement Sheet” or “New Sheet” pursuant to 37 CFR 1.121(d). If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance. 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 1-3, 7, 8, 12-14, and 20 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Zeiss (EP 0120102 A1). The Zeiss reference discloses a temperature measuring device (Fig. 1), comprising: a drive source (1) configured to generate a measurement current or a measurement voltage between first and second connection points of the drive source; a plurality of temperature resistors comprising a reference temperature resistor (R1, R2) and a measurement temperature resistor (RM1, RM2, RM3), the reference temperature resistor being between a first line node and a second line node, the measurement temperature resistor being between a first line node and a second line node; a first switching unit (2) configured to connect the first connection point of the drive source to at least one member selected from the group consisting of the first line node of the reference temperature resistor and the first line node of the measurement temperature resistor; a voltage recording unit (5) configured to sense a voltage at the temperature resistors; a first line electrically connecting the second line node of the reference temperature resistor and the second line node of the measurement temperature resistor together to a first connection point of the voltage recording unit; and a temperature determination unit (6) configured to be communicatively coupled to the voltage recording unit to: i) receive the voltage recorded by the voltage recording unit; and ii) determine a temperature at or in an optical system based on the voltage received from the voltage recording unit. With respect to claim 2, see the Abstract. With respect to claim 3, there are three measurement resistors. With respect to claim 7, Zeiss has a second switching unit (3). With respect to claim 8, see the Abstract. With respect to claim 12, see Figure 1. With respect to claim 13, see the Abstract. With respect to claim 14, the temperature sensor is for use in an interferometer (i.e.: optical system). With respect to claim 20, the method of use is inherent to the apparatus. Claim Rejections - 35 USC § 103 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. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. Claims 4-6, 9-11, and 15-19 are rejected under 35 U.S.C. 103 as being unpatentable over Zeiss (EP 0120102 A1). With respect to claim 4, Fig. 1 shows that the second line from each measurement resistor (RM1, RM2, RM3) is connected to a separate line that is routed through bottom switching unit (g) to the voltage recording unit (4,5), instead of all of them being connected together into a single line. However, connecting the ground line shown directly to op-amp 4 (thereby eliminating the need for switching unit g entirely) should not change the operation of the device (as there is already switching unit 3 to isolate each measuring resistor) other than to modify slightly the temperature calculating equations, so this alternative configuration would have been obvious to try. With respect to claims 5 & 6, the Zeiss reference does not expressly state that all of the elements shown are on a “printed circuit board”, but circuit boards were extremely well known, and it would have been obvious to the ordinary practioner to manufacture the circuit shown at least in part upon a standard printed circuit board motivated by its art recognized suitability for its intended use. With respect to claim 9, Fig. 1 shows that the second line from each measurement resistor (RM1, RM2, RM3) is connected to a separate line that is routed through bottom switching unit (g) to the voltage recording unit (4,5), instead of all of them being connected together into a single line. However, connecting the ground line shown directly to op-amp 4 (thereby eliminating the need for switching unit g entirely) should not change the operation of the device (as there is already switching unit 3 to isolate each measuring resistor) other than to modify slightly the temperature calculating equations, so this alternative configuration would have been obvious to try. With respect to claims 10-11, the Zeiss reference does not expressly state that all of the elements shown are on a “printed circuit board”, but circuit boards were extremely well known, and it would have been obvious to the ordinary practioner to manufacture the circuit shown at least in part upon a standard printed circuit board motivated by its art recognized suitability for its intended use. With respect to claims 15-18, the specific layout of the physical circuit would be dictated by the deign of the housing of the interferometer. With respect to claim 19, applicant has admitted in his background section that temperature sensors are commonly used in EUV Lithography apparatuses, so it would have been obvious to the ordinary practioner to use the temperature sensor of Zeiss in an EUV Lithography apparatus motivated by its known suitability for its intended use. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. The other references cited but not applied show the general state of the art. Any inquiry concerning this communication or earlier communications from the examiner should be directed to RANDY W GIBSON whose telephone number is (571)272-2103. The examiner can normally be reached Tue-Friday 10AM-6PM. 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, Peter Macchiarolo can be reached at 571-272-2375. 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. RANDY W. GIBSON Primary Examiner Art Unit 2856 /RANDY W GIBSON/ Primary Examiner, Art Unit 2855
Read full office action

Prosecution Timeline

Jan 23, 2024
Application Filed
Feb 13, 2026
Non-Final Rejection — §102, §103 (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
76%
Grant Probability
98%
With Interview (+22.5%)
2y 7m
Median Time to Grant
Low
PTA Risk
Based on 1338 resolved cases by this examiner. Grant probability derived from career allow rate.

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