RISC-V Processor Core Technology Landscape 2026
RISC-V Processor Core Technology Landscape 2026
RISC-V has evolved from academic project to serious ARM and x86 competitor across computing tiers. China holds approximately 80% of patent filings in this dataset, with 2024–2026 filings dominating activity.
RISC-V: From Open ISA to Global Processor IP Race
RISC-V is an open, royalty-free instruction set architecture built on RISC principles, featuring a small base instruction set (RV32I/RV64I), a modular extension framework covering M, F, D, V, C, H, and custom extensions, and multiple privilege levels including machine, supervisor, and user modes.
The technology field spans five principal sub-domains: core pipeline microarchitecture (in-order, out-of-order, scalar, and superscalar), multi-core and many-core architectures with 3D interconnect and cache coherency, ISA extension and co-design including RVV and dynamic reconfiguration, virtualization and mixed-criticality systems via H-extension, and compiler and system software tooling.
The dataset spans publications from 2009 to 2026, revealing three phases: a foundational period (2009–2018) focused on binary translation and IoT cores; an ecosystem expansion phase (2019–2022) with Ara vector silicon tapeout, multi-core prototyping, and rapid Chinese assignee filing growth; and an advanced specialization phase (2023–2026) featuring out-of-order low-power cores, FHE processors, and hardware ISA translation.
Among the retrieved results, 2024–2026 filings dominate numerically, representing the most active phase. Subjects include wide vector processors, RISC-V/x86 hardware ISA translation, full homomorphic encryption processors, hardware-aware multilayer IR compilers, and dynamic multi-core cache coherency protocols targeting scale beyond 64 cores.
Patent Activity by Technology Cluster and Filing Period
The dataset reveals a pronounced acceleration in filings from 2023 onward, with the five principal sub-domains exhibiting markedly different maturity profiles. Core pipeline and vector extension clusters show the highest filing density, while virtualization and compiler tooling are emerging rapidly in 2025–2026.
RISC-V Patent Filings by Technology Cluster (This Dataset)
Core pipeline microarchitecture and vector processing together account for the largest share of retrieved filings, reflecting the primary competitive battleground in RISC-V IP.
↗ Click bars to exploreRISC-V Patent Filing Volume by Period (This Dataset)
The 2023–2026 advanced specialization phase dominates numerically, with 2024–2026 filings representing the most active period in the dataset.
↗ Click bars to exploreRISC-V Deployment Across Embedded, HPC, AI, and Aerospace
RISC-V processor IP has been applied across six distinct domains in this dataset, ranging from deterministic embedded control and AIoT operating systems to HPC cluster prototyping, AI inference, robotics navigation, and security-focused compute.
Embedded and IoT Systems
The Institute of Software, Chinese Academy of Sciences filed two active AIoT-optimized Linux OS stack patents in CN in 2022. Zhejiang University’s Fast Interrupt System for RISC-V Architecture (2022, CN) targets deterministic interrupt latency critical for RTOS deployments. Dr. Girish H (2026, IN) implemented the Ibex core in SKY130 PDK producing ~31k standard cells at 58% utilization with zero DRC violations for deterministic embedded control.
Embedded / IoTHigh-Performance Computing and Servers
Monte Cimone (2022) demonstrated a multi-node RISC-V cluster based on the SiFive U740 SoC running a full HPC software stack. A 64-bit RISC-V processor optimized for HPC targeting a 180nm ASIC was described in a 2025 Indian research filing. Shandong University’s RISC-V Server CPU UEFI Firmware Boot Method (2024, CN) signals expanding server-class ambitions for the architecture.
High-Performance ComputingAI and Machine Learning Inference
Tsinghua University filed a RISC-V Compatible Fully Homomorphic Encryption Algorithm General Processor patent in CN in 2025, targeting privacy-preserving AI workloads. Guangdong Saiboan Intelligent Technology’s hardware-aware multi-layer IR compiler (2025, CN) introduces a three-tier SPU/VPU/MPU abstraction cache-hierarchy-aware at compile time. The Institute of Software, Chinese Academy of Sciences filed a Scalable OS for RISC-V Architecture Extension Instruction Sets in CN in 2024 to support custom ML accelerator extensions.
AI InferenceRobotics and Aerospace Navigation
Beijing Institute of Spacecraft System Engineering filed a patent in CN in 2026 on Path Planning for Extreme Environments Based on RISC-V Multi-Core Architecture, adapting the RISC-V instruction set and a hybrid star/mesh interconnect topology for robotic navigation under extreme conditions. This filing represents the intersection of RISC-V multi-core scaling with safety-critical aerospace and robotics requirements.
Robotics / AerospaceLeading Assignees in the RISC-V Processor Patent Landscape
Among the retrieved patent records, five assignees hold three or more filings. Shandong Inspur Science Research Institute Co., Ltd. leads with five filings covering thread scheduling, bus systems, vector processing, and dual-ISA operation, while the Institute of Software, Chinese Academy of Sciences holds four filings focused on AIoT and scalable OS infrastructure.
Top RISC-V Patent Assignees by Filing Count (This Dataset)
↗ Click bars to exploreShandong Inspur Science Research Institute
Shandong Inspur Science Research Institute Co., Ltd. leads the dataset with 5 filings concentrated in 2024–2025. Key patents cover real-time high-thread scheduling (2024, CN), a wide ultra-wide long vector processor with full cross-bar interconnect (2025, CN), and dual ISA operation enabling RISC-V/x86 compatibility. Multiple patents are active filings in the CN jurisdiction, reflecting the institute’s focus on server-class and HPC RISC-V processor design.
China — CNInstitute of Software, Chinese Academy of Sciences
The Institute of Software, Chinese Academy of Sciences holds 4 filings in this dataset spanning 2022–2024 in the CN jurisdiction. Patents include OS for AIoT Scenarios Supporting RISC-V Processors (2022, CN), a Scalable OS for RISC-V Architecture Extension Instruction Sets (2024, CN), and a Dynamic Analysis Method for RISC-V Applications Based on Hardware Virtualization (2023, CN). These filings reflect a strategic focus on OS-level infrastructure enabling custom ISA extensions and AIoT deployments.
China — CNFour Forward Signals in 2025–2026 RISC-V Filings
The most recent filings in the dataset (2025–2026) signal four distinct technology directions that are likely to define the next competitive phase of RISC-V processor development: hardware ISA bridging, AI compiler infrastructure, adaptive cache coherency, and privacy-preserving compute.
Hardware-Level x86/RISC-V ISA Bridge Architectures
Multiple 2025–2026 filings describe x86-to-RISC-V hardware translation units embedded in the decode pipeline. Intel (China) Research Center’s 2026 CN patent embeds a translation cache mapping unsupported instructions to micro-operations at the decode stage, enabling forward ISA compatibility without pipeline disruption. Shanghai Xinlijii Semiconductor’s 2025 CN patent enables hardware-level instruction set arbitration for seamless x86/RISC-V switching on a single MCU without software translation overhead, directly targeting the Windows application ecosystem compatibility gap.
AI/ML-Targeted Multi-Layer IR Compiler Infrastructure
Guangdong Saiboan Intelligent Technology Co., Ltd.’s hardware-aware multi-layer IR compiler patents (2025, CN) introduce a three-tier computing abstraction—SPU/VPU/MPU—that is aware of cache hierarchy at compile time. This bridges RISC-V’s ISA extensibility with practical ML workload deployment on heterogeneous RISC-V cores. The Institute of Software, Chinese Academy of Sciences’ Scalable OS for RISC-V Architecture Extension Instruction Sets (2024, CN) provides the OS-level scaffolding required for custom ML accelerator extensions.
RISC-V Vector Processing: Open Academic vs. Commercial Proprietary Approaches
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| Dimension | New Ara (Open Source / Academic) | Alibaba Innovation RVV SoC (Commercial) |
|---|---|---|
| Jurisdiction | Literature (academic, 2022) | United States (US, 2024) |
| RVV Compliance | First open-source RVV v1.0 implementation | RVV core with enhanced accelerator communication interface |
| Performance | FPU utilization >98.5%; 15% better area and 6% improved throughput vs. older RVV implementations | Targeting high-performance SoC integration and accelerator coupling |
| Architecture | Lane-based vector engine; 1 GHz+ in 22-nm FD-SOI (Ara, 2020) | RVV core with enhanced accelerator communication interface for SoC |
| IP Status | Open-source; academic literature (not patented) | Active US patent (2024); proprietary claims on accelerator coupling interface |
| Strategic Risk | Freely usable; commercial RVV claims may constrain derived SoC designs | Narrow but strategically placed claims around accelerator-to-vector-core coupling interfaces |
| Deployment Target | Research, open-source silicon, academic prototyping | High-performance SoC integration; commercial accelerator coupling |
Frequently Asked Questions: RISC-V Processor Patents 2026
China (CN) dominates with approximately 80% of patent filings in the retrieved dataset. No European Patent Office (EP), Japanese (JP), or Korean (KR) filings appear in this dataset. India (IN) and the United States (US) account for the remaining filings.
Shandong Inspur Science Research Institute Co., Ltd. leads the dataset with 5 filings (2024–2025, CN), covering real-time thread scheduling, bus systems, wide vector processors, and dual-ISA RISC-V/x86 operation. The Institute of Software, Chinese Academy of Sciences and Shanghai Xinlijii Semiconductor Co., Ltd. each hold 4 filings.
The five principal sub-domains in this dataset are: (1) core pipeline microarchitecture (in-order, out-of-order, scalar, superscalar), (2) multi-core and many-core architectures with 3D interconnect and cache coherency, (3) ISA extension and co-design including RVV and dynamic reconfiguration, (4) virtualization and mixed-criticality systems via the H-extension, and (5) tooling and system software including compiler infrastructure and unified OS imaging.
Multiple 2025–2026 filings describe hardware-level x86-to-RISC-V translation units embedded in the decode pipeline. Intel (China) Research Center’s 2026 CN patent uses a translation cache mapping unsupported instructions to micro-operations at the decode stage. Shanghai Xinlijii Semiconductor’s 2025 CN patent enables seamless x86/RISC-V switching on a single MCU without software translation overhead. This trend directly targets the Windows application ecosystem compatibility gap.
Yes. Monte Cimone (2022) demonstrated a multi-node RISC-V cluster based on the SiFive U740 SoC running a full HPC software stack. A 64-bit RISC-V processor optimized for HPC targeting 180nm ASIC implementation was described in a 2025 Indian filing. Shandong University filed a RISC-V Server CPU UEFI Firmware Boot Method in CN in 2024, signaling server-class ambitions.
The dataset spans publications from 2009 to 2026 and is derived from a limited set of patent and literature records retrieved across targeted searches in PatSnap Eureka. It represents a snapshot of innovation signals within this dataset only and should not be interpreted as a comprehensive view of the full global RISC-V industry.