Prosecution Insights
Last updated: April 19, 2026
Application No. 18/467,168

RESTORATION OF LARGE VIRTUAL MACHINES USING COMPOSITE VIRTUAL DISKS

Non-Final OA §103§112
Filed
Sep 14, 2023
Examiner
RASHID, WISSAM
Art Unit
2195
Tech Center
2100 — Computer Architecture & Software
Assignee
DELL PRODUCTS, L.P.
OA Round
1 (Non-Final)
88%
Grant Probability
Favorable
1-2
OA Rounds
2y 11m
To Grant
99%
With Interview

Examiner Intelligence

Grants 88% — above average
88%
Career Allow Rate
572 granted / 654 resolved
+32.5% vs TC avg
Moderate +12% lift
Without
With
+12.3%
Interview Lift
resolved cases with interview
Typical timeline
2y 11m
Avg Prosecution
25 currently pending
Career history
679
Total Applications
across all art units

Statute-Specific Performance

§101
9.7%
-30.3% vs TC avg
§103
44.9%
+4.9% vs TC avg
§102
12.4%
-27.6% vs TC avg
§112
19.5%
-20.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 654 resolved cases

Office Action

§103 §112
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 . Claims 1-20 are pending. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 2, 9, and 16 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. With respect to claims 2, 9, and 16, they recite the limitation “VM data that is a size larger than 200 gigabytes”. However, no upper limit is disclosed. The metes and bounds of the VM data size is, therefore, unclear. 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. Claim(s) 1,3, 8,10, 15, and 17 is/are rejected under 35 U.S.C. 103 as being unpatentable over Shu (US 2020/0210091) in view of Teli et al. (US 9354907). With respect to claim 1, Shu discloses: obtaining, by a backup agent, a restoration request for a VM (Fig. 4 S410, the backup server corresponds to “backup agent”); in response to the restoration request (Fig. 4, S420-S460 executes in response to receiving the request): identifying a set of backup slices associated with the VM (Fig. 4, S420, S450); initiating a restoration of each of the set of backup slices to a production host, wherein the set of backup slices is stored in a backup storage system operatively connected to the production host (Fig. 4 S460); generating, at the production host, a composite virtual disk associated with the VM and mapping VM data in the set of backup slices to the composite virtual disk ([0041]); Shu does not specifically disclose: generating the VM to read from the composite virtual disk. However, Teli discloses: generating the VM to read from the composite virtual disk (col. 5, lines 50-63). It would have been obvious to a person having ordinary skill in the art before the effective filing date of the invention to incorporate the teachings of Teli to reduce reading from the storage device when restoring backup data and thereby reduce communication load between the backup server/agent and the production host of Shu. With respect to claim 3, Shu discloses: wherein the composite virtual disk comprises a set of logical slices each mapping to one of the set of backup slices ([0129]). With respect to claim 4, Shu discloses: wherein a backup slice of the set of backup slices comprises a portion of the VM data associated with one of the set of logical slices and a VM backup metadata file (Abstract, [0008]). With respect to claim 5, Shu discloses: wherein the set of backup slices is identified using the VM backup metadata file ([0009]). With respect to claim 6, Shu discloses: wherein the VM backup metadata file comprises a set of attributes associated with the portion of the VM data ([0040]). With respect to claim 7, Shu discloses: wherein one of the set of attributes is a storage location of a file of the VM data (id.). With respect to claims 8,10-14, they recite similar limitations as claims 1, 3-7, respectively, and are therefore rejected under the same citations and rationale. With respect to claims 15, 17-20, they recite similar limitations as claims 1, 3-7, respectively, and are therefore rejected under the same citations and rationale. Claim(s) 2, 9, and 16 are rejected under 35 U.S.C. 103 as being unpatentable over Shu (US 2020/0210091) in view of Teli et al. (US 9354907) further in view of Vemuri (US 9477508). With respect to claim 2, Shu and Teli do not specifically disclose: wherein the VM comprises VM data that is a size larger than 200 gigabytes (GB). However, Vemuri discloses: wherein the VM comprises VM data that is a size larger than 200 gigabytes (GB) (col. 5, lines 50-line 22 of col. 6). It would have been obvious to a person having ordinary skill in the art before the effective filing date of the invention to incorporate the teachings of Vemuri to ensure virtual machines can benefit from the physical characteristics of a storage device by returning a storage capacity that is required by the virtual machine, e.g. 200 GB or 275 GB depending on the total capacity of the storage device thereby allowing the virtual machine to request capacity that matches its requirements, rather than strict allocation. With respect to claims 9 and 16, they recite similar limitations as claim 2, and is therefore rejected under the same citations and rationale. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to WISSAM RASHID whose telephone number is (571)270-3758. The examiner can normally be reached Monday-Friday 8:00 am-5:00 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, Aimee Li can be reached at (571)272-4169. 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. /WISSAM RASHID/Primary Examiner, Art Unit 2195
Read full office action

Prosecution Timeline

Sep 14, 2023
Application Filed
Feb 21, 2026
Non-Final Rejection — §103, §112 (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
88%
Grant Probability
99%
With Interview (+12.3%)
2y 11m
Median Time to Grant
Low
PTA Risk
Based on 654 resolved cases by this examiner. Grant probability derived from career allow rate.

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