Prosecution Insights
Last updated: July 17, 2026
Application No. 18/361,018

METHOD FOR REDUCING SURFACE TENSION OF POLYMER MATERIAL AND METHOD FOR CONTROLLING ORIENTATION OF BLOCK COPOLYMER THIN FILM BY DECOMPRESSION EFFECT

Non-Final OA §102
Filed
Jul 28, 2023
Priority
Jul 03, 2023 — TW 112124822
Examiner
BHUSHAN, KUMAR R
Art Unit
1766
Tech Center
1700 — Chemical & Materials Engineering
Assignee
National Tsing Hua University
OA Round
1 (Non-Final)
74%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 74% — above average
74%
Career Allowance Rate
595 granted / 810 resolved
+8.5% vs TC avg
Strong +33% interview lift
Without
With
+32.6%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
46 currently pending
Career history
852
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
79.2%
+39.2% vs TC avg
§102
10.6%
-29.4% vs TC avg
§112
5.5%
-34.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 810 resolved cases

Office Action

§102
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. Priority 3. Acknowledgment is made of applicant’s claim for foreign priority under 35 U.S.C. 119 (a)-(d). The certified copy has been filed in parent Application TAIWAN 112124822 07/03/2023 filed on 08/21/23. Information Disclosure Statement The information disclosure statement (IDS), filed on 07/28/23 has been considered. Please refer to Applicant's copy of the 1449 submitted herewith. Election/Restrictions Applicant’s election without traverse of claims 2-10 in the reply filed on 04/22/26 is acknowledged. Claims 1-10 are pending, claim 1 has been withdrawn in an amendment filed on 04/22/26. Claims 2-10 are examined in this Office action. 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 2-10 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Panda (A. S. Panda et. al., Controlled orientation of silicon-containing diblock copolymer thin films by substrate functionalization under vacuum, Macromolecules, 2023, 56, 841−849). Regarding claims 2, 4-6, Panda discloses a method for controlling orientation of block copolymer thin film by decompression effect, comprising: providing a block copolymer thin film, wherein the block copolymer thin film comprises a first block such as polystyrene and a second block such as polydimethylsiloxane; and performing a decompression step, wherein the block copolymer thin film is placed at a low pressure environment such as 10-4 Pa, fall into claim 2 range of lower than 10⁵ Pa or claim 6 range of 100 Pa to 10-4 Pa, so as to control an orientation of the block copolymer thin film, wherein such pressure implicitly teaches reduce a surface tension difference between the first block and the second block (page 845-847, experimental). Regarding claim 3, Panda discloses a wherein a surface tension of the first block is greater than a surface tension of the second block (page 842, para 3). Regarding claim 7, Panda discloses the thermal annealing at temperature does not disclose wherein in the decompression step, further comprises the block copolymer thin film placed at a heating temperature for thermal annealing, and the heating temperature is 270°C (Figure 6, page 847, para 1) , fall into claimed 250°C to 350°C Regarding claims 8-10, Panda discloses the block copolymer thin film forms a plurality of perpendicularly oriented cylindrical structures after the decompression step, wherein the perpendicularly oriented cylindrical structures are ordered arrangement (Figure 6, page 847). Claims 2-5, 8-10 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Wadley (M. Wadley et. al., Solvent dependence of the morphology of spin-coated thin films of polydimethylsiloxane-rich polystyrene-block-polydimethylsiloxane copolymers, Macromolecules, 2012, 45, 5538−5545). Regarding claims 2, 4-5, Wadley discloses a method for controlling orientation of block copolymer thin film by decompression effect, comprising: providing a block copolymer thin film, wherein the block copolymer thin film comprises a first block such as polystyrene and a second block such as polydimethylsiloxane; and performing a decompression step, wherein the block copolymer thin film is placed at a low pressure environment such as 128 mmHg, fall into claim 2 range of lower than 10⁵ Pa, so as to control an orientation of the block copolymer thin film, wherein such pressure implicitly teaches reduce a surface tension difference between the first block and the second block (page 5540-5542, Figure 4). Regarding claim 3, Wadley discloses a wherein a surface tension of the first block is greater than a surface tension of the second block (page 5542, para 2). Regarding claims 8-10, Wadley discloses the block copolymer thin film forms a plurality of perpendicularly oriented cylindrical structures after the decompression step, wherein the perpendicularly oriented cylindrical structures are ordered arrangement (page 5543). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to KUMAR R BHUSHAN whose telephone number is (313)446-4807. The examiner can normally be reached 9.00 AM to 5.50 PM (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, RANDY P GULAKOWSKI can be reached at (571)272-1302. 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. /KUMAR R BHUSHAN/Primary Examiner, Art Unit 1766
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Prosecution Timeline

Jul 28, 2023
Application Filed
Jul 09, 2026
Non-Final Rejection mailed — §102 (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
74%
Grant Probability
99%
With Interview (+32.6%)
2y 9m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 810 resolved cases by this examiner. Grant probability derived from career allowance rate.

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