Secure payment on i-micronews Contact Yole Développement for I Micronews reports

RSS I-micronewsYole Dévelopement on TwitterYole Développement on Google +LinkedIn Yole pageSlideshare Yole Développement I-Micronews

Emerging Non-Volatile Memories Patent Landscape

nvm time evolution
3 990 €

Choose a minimum of three reports from Yole Group and receive a discount of at least 36% on your package – Contact us!


Yole eNVM Patent IconeFlyerNiche memory markets with a vast number of patents held by big companies

The integration limit of flash memories is approaching, and emerging Non-Volatile Memories (eNVM) to replace conventional Flash Memories have been proposed. Ferroelectric RAMs (FeRAMs), Magnetoresistive RAMs (MRAMs), Resistive-change RAMs (ReRAMs) or Phase-Change Random-Access Memories (PCRAMs) are promising to change the memory landscape. The field of eNVM has shown an intensive patenting activity since early 1990s, with a substantial increase during the past decade.

Currently, there are more than 8,600 relevant patent families filed all over the world. Patent families were filed by more than 800 patent applicants mainly located in USA, Japan, Taiwan and China. From a quantitative point of view, the most active companies are SK Hynix, Samsung, Toshiba, Micron Technology and IBM. In addition, startup firms do not file many patents and their main strategy is to license or sell their intellectual property.

nvm time evolution

The patents related to MRAM technology account for more than 40% of filings. The main patent applicants are Toshiba, Samsung and Renesas Electronics which represent together almost 30% of the patents. The MRAM technology was growing between 2003-2007 with more than 50% of patents published during these years. Currently, the number of patents filed has remained stable, with about 200 patents filed per year.

About 30% of patent families are related to PCRAM technology. They were mainly filed by SK Hynix and Samsung, they represent almost 40% of published patents. The PCRAM technology was increasing between 2002 and 2009, with more than 450 patent families published in 2009. Publication patents is decreasing these last 4 years, however more than 200 patents are still published every year. Patent filings will continue on PCRAM technology to further improve memory applications.

The patents dedicated to FeRAM technology represent 20% of filings. They were mainly filed by SK Hynix, Samsung and Seiko Epson which represent almost 50% of published patents. FeRAM is a mature technology, and FeRAM is not an active patent field yet.

Patents related to ReRAM technology account for almost 10% of new patent filings. ReRAM is the newest patented technology and the number of patent publications will continue to increase in the coming years. With over 100 patent families already filed, Samsung will play a significant role in this emerging technology development.


Our search strategy combines automated and manual screenings that have led to the selection of more than 8,600 relevant patent families. Those have been segmented by type of memory that are analyzed in detail: FeRAM, MRAM, ReRAM, PCRAM.
For each memory type, the report provides a detailed analysis including the time evolution of patent filings, identification of the key players, collaborations networks, as well as the identification of the key patents based-on citations and impacts in eNVM technology.

FeRAM key patents and corresponding main citing applications


Hundreds companies/academics are involved in eNVM IP. Most of the major NVM players are present in the list of the top patent assignees.
The report provides a ranking and analysis of the relative strength of the top eNVM patent holders derived from their portfolio size and patent citations Networks. Based on this portfolio analysis as well as on their market interest, we have identified 10 major players that are profiled in this report. Each profile includes a detailed portfolio analysis with the time evolution of patent filing, key patents, memory types, litigations, licensing, partnerships and strategy.

nvm key patent

The report also includes an excel database with all patents analyzed in the report.
This database allows multi-criteria searches and includes :

- Patent publication number
- Hyperlinks to the original documents
- Priority date
- Title
- Abstract
- Applicants
- Technological segments
- Legal status for each member of the patent family

Table of contents

Scope of the report
Key features of the report
Terminology for patent analysis
Types of memories
Search strategy and patent screening
Technological segmentation
Executive summary
IP landscape overview 16
> Time Evolution of Patent Publication
> Technology Breakdown of Patent Filing

Analysis of technology segments 19

> IIa – FeRAM
> IIb – MRAM 
> IIc – ReRAM 
> IId – PCRAM 

For each memory type:
- Technology description
- Time evolution of patent publications
- Main patent assignees ranking
- Main joint developments
- Time evolution of Top-15 patent assignees
- Publication countries of Top-15 patent assignees
- Geographic breakdown of patent filings
- Current legal status of patents
- Patent assignee IP network
- Segmentation by type of patent
- Main IPC classes
- Main reference patents
- Expiration of granted patents
- Litigations
- Summary of main assignee patent portfolio
- Strength of main assignee patent portfolio

Summary of assignee portfolio 104

> Matrix applicant / memory type
> Focus on key players

For all of them : Portfolio summary, key patents, collaborations, litigations and licenses, granted patents near expiration.
- SK Hynix
- Samsung (+Grandis)
- Toshiba
- SanDisk
- Micron Technology (+Numonyx +Elpida Memory)
- Infineon Technologies
- Macronix International
- Everspin Technologies
- Cypress Semiconductor (+Ramtron International)
> Discussion

Companies cited

Adesto Technologies
Altis Semiconductor
Avalanche Technology
Beijing University
Crocus Technology
Cypress Semiconductor
Electronics and Telecommunications Research Institute (ETRI)
Elpida Memory
Energy Conversion Devices
Everspin Technologies
Freescale Semiconductor
Fudan University
Hanyang University
Hewlett Packard
Industrial Technology Research Institute (ITRI)

Infineon Technologies
Institute of Microelectronics (CAS)
Macronix International
Magic Technology
Micron Technology
Nanya Technology
New York University
Oki Electric Industry
Promos Technologies
Ramtron International
Renesas Electronics
Seagate Technology
Seiko Epson
Semiconductor Manufacturing International Corporation (SMIC)
Shanghai Institute (CAS)
SpinTransfer Technologies
Taiwan Semiconductor Manufacturing (TSMC)
Texas Instruments
Unity Semiconductor
Winbond Electronics.



  • Analysis of key players and technology key segments (FeRAM, MRAM, ReRAM, PCRAM)
  • Time evolution of patent publications and countries of filings
  • Current legal status of patents
  • Ranking of main patent assignees
  • Joint developments and IP collaboration network of main patent assignees
  • Key patents
  • Granted patents near expiration
  • Overview of patent litigations
  • Relative strength of main companies IP portfolio
  • Matrix applicants/memory type for more than 50 companies
  • Emerging NVM IP” profiles of the main companies with key patents, memory types, litigations, licensing, partnerships and strategy
  • Excel database with all patents analyzed in the report with memory type segmentation