PATENT CLAIM ANALYSIS

Application Number: 15876500
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2019-07
Patent Classification: ["712", "242000"]

Abstract:
Methods, circuitries, and systems for real-time protection of a stack are provided. A stack protection circuitry includes interface circuitry and computation circuitry. The interface is circuitry configured to receive a return instruction from a central processing unit (CPU). The computation circuitry is configured to, in response to the return instruction, generate protection data that i) identifies a new topmost return address location that is below a current protected topmost return address location and ii) specifies read only access for the new topmost return address location. The interface circuitry is configured to provide the protection data to a memory protection unit to cause the memory protection unit to enforce a read only access restriction on the new topmost return address location.

Claim (Index 2):
The stack protection circuitry of  claim 1 , wherein:\n the interface circuitry is further configured to receive, from the CPU, a call instruction that identifies a subsequent protected topmost return address location; and the computation circuitry is configured to, in response to the call instruction, generate protection data that identifies the subsequent protected topmost return address location; and wherein the interface circuitry is configured to provide the protection data to the memory protection unit to cause the memory protection unit to enforce a read only access restriction on the subsequent topmost return address location.

Metadata:
- Claim Count in Document: 35.0
- Percentile: 86.0
- Lexical Diversity: 2.25424
- Patent Class: 712.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['13717315', '12263802', '11014111', '13285434', '11787832']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5812301693427675
- 35 USC 102 Novelty (BERT): 0.4663649459080191
- Combined Prediction Score: 0.5697436469992927
- Mean Citation Score: 152.95640199999997
- Max Citation Score: 156.08084
- Similarity Product: 116.8569376834798

Labels:
- Claim Label 101: 1
- Claim Label 102: 0
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 0
- Label 101 Adjusted: 1

Dataset: test