Prosecution Insights
Last updated: April 19, 2026
Application No. 18/471,511

ALUMINUM ALLOY, ELECTRONIC DEVICE, AND ALUMINUM ALLOY PREPARATION METHOD

Non-Final OA §103
Filed
Sep 21, 2023
Examiner
ROE, JESSEE RANDALL
Art Unit
1759
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Huawei Technologies Co., Ltd.
OA Round
1 (Non-Final)
76%
Grant Probability
Favorable
1-2
OA Rounds
3y 1m
To Grant
84%
With Interview

Examiner Intelligence

Grants 76% — above average
76%
Career Allow Rate
976 granted / 1279 resolved
+11.3% vs TC avg
Moderate +8% lift
Without
With
+7.9%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
49 currently pending
Career history
1328
Total Applications
across all art units

Statute-Specific Performance

§101
1.2%
-38.8% vs TC avg
§103
51.0%
+11.0% vs TC avg
§102
9.8%
-30.2% vs TC avg
§112
27.4%
-12.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1279 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 . Status of the Claims Claims 1-20 are pending and are currently under examination. 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. Claims 1-14 are rejected under 35 U.S.C. 103 as being unpatentable over BYD (CN 112159916 A). In regard to claim 1, BYD (CN ‘916) discloses aluminum alloys having compositions relative to that of the instant invention as set forth below (abstract and page 2). Element Instant Claim (mass percent) BYD (CN ‘916) (mass percent) Overlap Si 8 – 10 7 – 11 8 – 10 Mg 0.001 – 0.2 0.001 – 0.2 0.001 – 0.2 Mn 0.001 – 0.09 0.005 – 0.1 0.005 – 0.09 Fe 0.7 – 1.3 0.4 – 1.0 0.7 – 1.0 Sr 0.001 – 0.05 0.01 – 0.06 0.01 – 0.05 Cu, Zn, Ti optional – 0.2 Cu 0.001 – 0.2 Zn – 0.2 Cu 0.001 – 0.2 Zn Al Balance Balance Balance The Examiner notes that the amounts of silicon, magnesium, manganese, iron, strontium, copper, zinc and titanium for the aluminum base alloys disclosed by BYD (CN ‘916) overlap the amounts of the instant invention, which is prima facie evidence of obviousness. MPEP 2144.05 I. It would have been obvious to one having ordinary skill in the art prior to the filing of the instant invention to have selected the claimed amounts of silicon, magnesium, manganese, iron, strontium, copper, zinc and titanium from the amounts disclosed by BYD (CN ‘916) because BYD (CN ‘916) discloses the same utility throughout the disclosed ranges. With respect to the recitation “wherein the inevitable impurities account for ≤0.15%” in claim 1, BYD (CN ‘916) discloses impurity elements at less than 0.1% (abstract and page 2). In regard to claim 2, BYD (CN ‘916) discloses aluminum alloys having compositions relative to that of the instant invention as set forth below (abstract and page 2). Element Instant Claim (mass percent) BYD (CN ‘916) (mass percent) Overlap Si 8 – 9.5 7 – 11 8 – 9.5 Mg 0.05 – 0.15 0.001 – 0.2 0.05 – 0.15 Mn 0.001 – 0.05 0.005 – 0.1 0.005 – 0.05 Fe 0.7 – 1 0.4 – 1.0 0.7 – 1.0 Sr 0.01 – 0.05 0.01 – 0.06 0.01 – 0.05 Cu, Zn, Ti optional – 0.2 Cu 0.001 – 0.2 Zn – 0.2 Cu 0.001 – 0.2 Zn Al Balance Balance Balance The Examiner notes that the amounts of silicon, magnesium, manganese, iron, strontium, copper, zinc and titanium for the aluminum base alloys disclosed by BYD (CN ‘916) overlap the amounts of the instant invention, which is prima facie evidence of obviousness. MPEP 2144.05 I. It would have been obvious to one having ordinary skill in the art prior to the filing of the instant invention to have selected the claimed amounts of silicon, magnesium, manganese, iron, strontium, copper, zinc and titanium from the amounts disclosed by BYD (CN ‘916) because BYD (CN ‘916) discloses the same utility throughout the disclosed ranges. In regard to claim 3, BYD (CN ‘916) discloses aluminum alloys having compositions relative to that of the instant invention as set forth below (abstract and page 2). Element Instant Claim (mass percent) BYD (CN ‘916) (mass percent) Overlap Si 8.2 – 9.4 7 – 11 8.2 – 9.4 Mg 0.05 – 0.09 0.001 – 0.2 0.05 – 0.09 Mn 0.001 – 0.02 0.005 – 0.1 0.005 – 0.02 Fe 0.72 – 0.85 0.4 – 1.0 0.72 – 0.85 Sr 0.02 – 0.05 0.01 – 0.06 0.02 – 0.05 Cu, Zn, Ti optional – 0.2 Cu 0.001 – 0.2 Zn – 0.2 Cu 0.001 – 0.2 Zn Al Balance Balance Balance The Examiner notes that the amounts of silicon, magnesium, manganese, iron, strontium, copper, zinc and titanium for the aluminum base alloys disclosed by BYD (CN ‘916) overlap the amounts of the instant invention, which is prima facie evidence of obviousness. MPEP 2144.05 I. It would have been obvious to one having ordinary skill in the art prior to the filing of the instant invention to have selected the claimed amounts of silicon, magnesium, manganese, iron, strontium, copper, zinc and titanium from the amounts disclosed by BYD (CN ‘916) because BYD (CN ‘916) discloses the same utility throughout the disclosed ranges. In regard to claim 4, BYD (CN ‘916) discloses wherein copper would be present in an amount of 0.01 to 0.2 mass percent, which overlaps the range of the instant invention (abstract and page 2). In regard to claim 5, BYD (CN ‘916) discloses wherein copper would be present in an amount of 0.01 to 0.2 mass percent, which overlaps the range of the instant invention (abstract and page 2). In regard to claim 6, BYD (CN ‘916) discloses wherein copper would be present in an amount of 0.01 to 0.2 mass percent, which overlaps the range of the instant invention (abstract and page 2). In regard to claim 7, BYD (CN ‘916) discloses wherein zinc would be present in an amount of 0.001 to 0.2 weight percent, which overlaps the range of the instant invention (abstract and page 2). In regard to claim 8, BYD (CN ‘916) discloses wherein zinc would be present in an amount of 0.001 to 0.2 weight percent, which overlaps the range of the instant invention (abstract and page 2). In regard to claim 9, BYD (CN ‘916) discloses wherein zinc would be present in an amount of 0.001 to 0.2 weight percent, which overlaps the range of the instant invention (abstract and page 2). In regard to claim 10, BYD (CN ‘916) does not require the presence of titanium and therefore reads on the claim (abstract and page 2). In regard to claim 11, BYD (CN ‘916) does not require the presence of titanium and therefore reads on the claim (abstract and page 2). In regard to claim 12, BYD (CN ‘916) does not require the presence of titanium and therefore reads on the claim (abstract and page 2). In regard to claim 13, BYD (CN ‘916) suggests die casting (page 2). With respect to the recitation “has the following characteristics: a heat conductivity of ≥160 W/(m·K), a yield strength of ≥120 MPa, a tensile strength of ≥200 MPa, an elongation rate of ≥2%, a Brinell hardness of 60-80 HBW, and a corrosion rate of ≤4.5 mg/(dm2·d)” in claim 13, BYD (CN ‘916) discloses a substantially similar composition. Therefore, the claimed properties would be expected. MPEP 2112.01 I. With respect to the recitation “characterized after heat treatment is performed on the aluminum alloy, the aluminum alloy has the following characteristics: a heat conductivity of ≥180 W/(m·K), a yield strength of ≥100 MPa, a tensile strength of ≥ 180 MPa, an elongation rate of ≥2%, a Brinell hardness of 60-80 HBW, and a corrosion rate of ≤ 4.5 mg/(dm·d)” in claim 14, BYD (CN ‘916) discloses a substantially similar composition. Therefore, the claimed properties after a heat treatment would be expected. MPEP 2112.01 I. Claims 15-20 are rejected under 35 U.S.C. 103 as being unpatentable over BYD (CN 112159916 A) in view of Bui Dac et al. (US 2021/0044685). In regard to claim 15, BYD (CN ‘916) discloses aluminum alloys having compositions relative to that of the instant invention as set forth below (abstract and page 2). Element Instant Claim (mass percent) BYD (CN ‘916) (mass percent) Overlap Si 8 – 10 7 – 11 8 – 10 Mg 0.001 – 0.2 0.001 – 0.2 0.001 – 0.2 Mn 0.001 – 0.09 0.005 – 0.1 0.005 – 0.09 Fe 0.7 – 1.3 0.4 – 1.0 0.7 – 1.0 Sr 0.001 – 0.05 0.01 – 0.06 0.01 – 0.05 Cu, Zn, Ti optional – 0.2 Cu 0.001 – 0.2 Zn – 0.2 Cu 0.001 – 0.2 Zn Al Balance Balance Balance The Examiner notes that the amounts of silicon, magnesium, manganese, iron, strontium, copper, zinc and titanium for the aluminum base alloys disclosed by BYD (CN ‘916) overlap the amounts of the instant invention, which is prima facie evidence of obviousness. MPEP 2144.05 I. It would have been obvious to one having ordinary skill in the art prior to the filing of the instant invention to have selected the claimed amounts of silicon, magnesium, manganese, iron, strontium, copper, zinc and titanium from the amounts disclosed by BYD (CN ‘916) because BYD (CN ‘916) discloses the same utility throughout the disclosed ranges. With respect to the recitation “wherein the inevitable impurities account for ≤0.15%” in claim 15, BYD (CN ‘916) discloses impurity elements at less than 0.1% (abstract and page 2). With respect to the recitation “An electronic device, comprising a housing and a body in the housing wherein the body comprises a processing unit of the electronic device, and a part or all of the housing is an aluminum alloy” in claim 15, BYD (CN ‘916) fails to specify the above features. Bui Dac et al. (‘685) teaches an electronic device with a housing that would be made of an aluminum alloy in order to improve the aesthetic sense of the electronic device [0084]. Bui Dac et al. (‘685) further teaches a support member inside the electronic device that may be coupled with a display module on a surface thereof and with the printed circuit board on another surface thereof and a processor may be mounted on the printed circuit board and that process may include a central processing unit [0078]. Therefore, it would have been obvious to one having ordinary skill in the art prior to the filing of the instant invention to use the aluminum alloys disclosed by BYD (CN ‘916), as a housing for an electronic device with processor inside, as disclosed by Bui Dac et al. (‘685), in order to improve the aesthetic sense of the electronic device, as disclosed by Bui Dac et al. (‘685) ([0076] and [0084]). In regard to claim 16, BYD (CN ‘916) discloses aluminum alloys having compositions relative to that of the instant invention as set forth below (abstract and page 2). Element Instant Claim (mass percent) BYD (CN ‘916) (mass percent) Overlap Si 8 – 9.5 7 – 11 8 – 9.5 Mg 0.05 – 0.15 0.001 – 0.2 0.05 – 0.15 Mn 0.001 – 0.05 0.005 – 0.1 0.005 – 0.05 Fe 0.7 – 1 0.4 – 1.0 0.7 – 1.0 Sr 0.01 – 0.05 0.01 – 0.06 0.01 – 0.05 Cu, Zn, Ti optional – 0.2 Cu 0.001 – 0.2 Zn – 0.2 Cu 0.001 – 0.2 Zn Al Balance Balance Balance The Examiner notes that the amounts of silicon, magnesium, manganese, iron, strontium, copper, zinc and titanium for the aluminum base alloys disclosed by BYD (CN ‘916) overlap the amounts of the instant invention, which is prima facie evidence of obviousness. MPEP 2144.05 I. It would have been obvious to one having ordinary skill in the art prior to the filing of the instant invention to have selected the claimed amounts of silicon, magnesium, manganese, iron, strontium, copper, zinc and titanium from the amounts disclosed by BYD (CN ‘916) because BYD (CN ‘916) discloses the same utility throughout the disclosed ranges. In regard to claim 17, BYD (CN ‘916) discloses aluminum alloys having compositions relative to that of the instant invention as set forth below (abstract and page 2). Element Instant Claim (mass percent) BYD (CN ‘916) (mass percent) Overlap Si 8.2 – 9.4 7 – 11 8.2 – 9.4 Mg 0.05 – 0.09 0.001 – 0.2 0.05 – 0.09 Mn 0.001 – 0.02 0.005 – 0.1 0.005 – 0.02 Fe 0.72 – 0.85 0.4 – 1.0 0.72 – 0.85 Sr 0.02 – 0.05 0.01 – 0.06 0.02 – 0.05 Cu, Zn, Ti optional – 0.2 Cu 0.001 – 0.2 Zn – 0.2 Cu 0.001 – 0.2 Zn Al Balance Balance Balance The Examiner notes that the amounts of silicon, magnesium, manganese, iron, strontium, copper, zinc and titanium for the aluminum base alloys disclosed by BYD (CN ‘916) overlap the amounts of the instant invention, which is prima facie evidence of obviousness. MPEP 2144.05 I. It would have been obvious to one having ordinary skill in the art prior to the filing of the instant invention to have selected the claimed amounts of silicon, magnesium, manganese, iron, strontium, copper, zinc and titanium from the amounts disclosed by BYD (CN ‘916) because BYD (CN ‘916) discloses the same utility throughout the disclosed ranges. In regard to claim 18, BYD (CN ‘916) discloses wherein copper would be present in an amount of 0.01 to 0.2 mass percent, which overlaps the range of the instant invention (abstract and page 2). In regard to claim 19, BYD (CN ‘916) discloses wherein copper would be present in an amount of 0.01 to 0.2 mass percent, which overlaps the range of the instant invention (abstract and page 2). In regard to claim 20, BYD (CN ‘916) discloses wherein copper would be present in an amount of 0.01 to 0.2 mass percent, which overlaps the range of the instant invention (abstract and page 2). Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. CN 107253027 A teaches a stainless steel frame and aluminum alloy pressure cast plate structure for a mobile phone housing. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Jessee Roe whose telephone number is (571)272-5938. The examiner can normally be reached Monday thru Friday 7:30 am to 4 pm. 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, Curt Mayes can be reached at 571-272-1234. 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. /JESSEE R ROE/Primary Examiner, Art Unit 1759
Read full office action

Prosecution Timeline

Sep 21, 2023
Application Filed
Jan 09, 2024
Response after Non-Final Action
Feb 05, 2026
Non-Final Rejection — §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
84%
With Interview (+7.9%)
3y 1m
Median Time to Grant
Low
PTA Risk
Based on 1279 resolved cases by this examiner. Grant probability derived from career allow rate.

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