Prosecution Insights
Last updated: July 17, 2026
Application No. 18/813,890

HIGH SURFACE AREA COATINGS FOR SOLID-PHASE SYNTHESIS

Non-Final OA §103
Filed
Aug 23, 2024
Priority
Oct 09, 2019 — continuation of 11/896,945 +1 more
Examiner
KHAN, TAHSEEN
Art Unit
1781
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Microsoft Technology Licensing, LLC
OA Round
1 (Non-Final)
62%
Grant Probability
Moderate
1-2
OA Rounds
1y 4m
Est. Remaining
83%
With Interview

Examiner Intelligence

Grants 62% of resolved cases
62%
Career Allowance Rate
579 granted / 940 resolved
-3.4% vs TC avg
Strong +21% interview lift
Without
With
+21.4%
Interview Lift
resolved cases with interview
Typical timeline
3y 3m
Avg Prosecution
49 currently pending
Career history
979
Total Applications
across all art units

Statute-Specific Performance

§103
82.6%
+42.6% vs TC avg
§102
11.3%
-28.7% vs TC avg
§112
1.5%
-38.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 940 resolved cases

Office Action

§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 . Election/Restrictions Claims 1-10 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected method, there being no allowable generic or linking claim. Election was made without traverse in the reply filed on 6/18/26. Applicant’s election without traverse of Group II in the reply filed on 6/18/26 is acknowledged. 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. Claim(s) 11-20 is/are rejected under 35 U.S.C. 103 as being unpatentable over Corderman USPA_20060270229_A1 in view of Jani “Nanoporous anodic aluminum oxide”. 1. Regarding Claims 11, 12, 13, and 16, Corderman discloses etching an aluminum film by way of acid (corresponds to claimed limitation of instant Claim 13) to produce anodized aluminum oxide coating (paragraph 0003) that is porous (Abstract) wherein this process is done by electrochemically etching deposition (paragraph 0035) onto a silicon solid substrate (corresponds to limitation of instant Claim 12) (Claim 8). Corderman further discloses that said coating has “large areas” (paragraphs 0012, 0051, 0061) that seemingly suggests having available surface area that is greater than its substrate. 2. However, Corderman does not disclose the claimed functional group. 3. Jani discloses porous anodic aluminum oxide films on a substrate (Abstract) and states that enabling functional groups such as amine and hydroxyl groups (corresponds to claimed limitation of instant Claim 16), is attractive due to the ability to generate reactive and biocompatible polymer surfaces and controlling chemical functionality (Page 666). 4. It would have been obvious to one of ordinary skill in the art at the time the invention was filed to modify the AAO coating, of Corderman, by using such functional groups, of Jani, for obtaining the aforementioned advantages in its coating. 5. Regarding Claims 14 and 15, Corderman in view of Jani suggests using aminosilane group for silanization (Jani: Page 670). 6. Regarding Claims 17 and 20, Corderman in view of Jani suggests having more than one AAO coating (Corderman: paragraph 0036). The same regarding the surface area and functional group of the first coating above can be attributed to the subsequent second coating. 7. Regarding Claims 18 and 19, Corderman in view of Jani suggests using latex microparticles (Jani: Page 683). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to TAHSEEN KHAN whose telephone number is (571)270-1140. The examiner can normally be reached Mondays-Saturdays 08:00AM-10:00PM. 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, Frank Vineis can be reached at 5712701547. 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. /TAHSEEN KHAN/Primary Examiner, Art Unit 1781 June 29, 2026
Read full office action

Prosecution Timeline

Aug 23, 2024
Application Filed
Jul 02, 2026
Non-Final Rejection mailed — §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
62%
Grant Probability
83%
With Interview (+21.4%)
3y 3m (~1y 4m remaining)
Median Time to Grant
Low
PTA Risk
Based on 940 resolved cases by this examiner. Grant probability derived from career allowance rate.

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