Welcome to the CD-RW Disc Philips only licensing program. Please use the navigation on the right to find all the relevant information related to this program.

If you are a buyer of CD-RW discs and want to ensure that you are buying licensed products, please visit our special buyer page.

CD-RW Disc Patent License Philips only
We offer patent licenses to manufacturers of CD-RW discs. Our license provides CD-RW disc manufacturers with all the required Philips patents in a package.
Please note that in addition to the essential patents of Philips, other parties may own patents relevant for the system concerned. These patents are NOT included in this license agreement. For information on the conditions of these licenses please these other parties directly.

Philips offers a joint license that also covers essential patents of Sony and Ricoh. For full details, click CD-RW Disc joint


Licensing policy

Philips has a general licensing policy for CD, DVD and BD related products.


Download request

To download the document, please provide the following information.


Detailed Description

The detailed terms and conditions of the licensing program are described in the patent license agreement that you can find in the patents/agreements section.

Some important information:
The Philips only CD-RW Disc Patent License Agreement comprises the essential patents of Philips. A worldwide list of the essential patents, together with applicable expiry dates is attached to the agreement. Under the terms of the standard license agreement we only require payment of royalties of patents where any of these are actually used – in other words, either in the country of manufacture or in the country of sale.

CD-RW disc licensees have at all times the option to transfer to the latest version of the CD-RW Disc Patent License Agreement. In the event of such transfer, Philips shall not require the payment of the entrance fee under the new license agreement.

Reference copies of the current version of the Philips CD-RW Disc Patent License Agreement, together with the relevant Annexes, including worldwide patent lists, can be found in the patents/agreements section and the annexes section.

Patents / Agreements

Below you find patent lists and relevant agreements for the CD-RW Disc Patent License Agreement.

CD-RW Disc Patent lists 
The essential patents and their expiry dates. Please click the link to open the PDF file.

Annex A - Essential Philips' patents relevant to the CD-RW Disc/CD-RW part

+ Link to change history of patent lists 

Reference copies of current version of the CD-RW Disc Patent License Agreement. Please click the link to open the PDF file.

These versions are intended for prospective licensees:

CD-RW Disc Patent License Agreement (Philips only)
+ Manufacturer located in U.S.A

Philips CD-RW Disc Patent License Agreement - USA

+ Manufacturer located in Rest of the World

Philips CD-RW Disc Patent License Agreement - Rest of the World

Letter Agreement

Letter Agreement to the Philips CD-RW Disc Patent License Agreement

To view Royalty Reporting Forms, Audit Guidelines, Manufacturing Equipment list and Side Letters go to section Annexes


Pricing Information

The royalty rate is determined by one key factor:

1) Status of the licensee
If the company fulfills certain conditions, such as complete, true and accurate reporting and timely payment, reward rates are available. Otherwise the standard rate applies.

Note of caution
Compliance reward royalty rates are only made available to licensees who are in FULL compliance with their obligations under the license agreement.


  ONLY Standard rate ONLY Compliant
reward rate
CD-RW Disc 0.060 USD 0.045 USD

Note: In the event of any discrepancy in respect of the above information with relevant license agreements, the license agreements shall prevail. All terms and conditions will be subject to relevant license agreements.

Overview of royalty rates for all formats

+link to overview of royalty rates for all formats

Services / Information

Ordering & Services: We provide a number of services for optical disc and drive manufacturers. These include:
· Physical and logical verification
· Specification documents
· Test discs
· Tools

. Ordering specifications
. Ordering Information Agreements

For more information go to the Ordering & Services section


Are you a buyer?
Please visit our special buyer page.

What is CDs21 Solutions?
CDs21 Solutions is a voluntary association to promote CDs (compact discs). It was created by a merger of the Multimedia CD Consortium (MMCD), so far promoting CD-i and Video CD, and the Orange Forum (OSJ) specifically focusing on CD-R/RW among these standards.

More info at

This website provides technical details, including the OSJ information, and is partly password protected.

What is OSJ Disc Identification?
The OSJ a Disc Identification Method is provided by CDs21 Solutions’ Technical Working Group-1. Using this code appropriately, each drive can optimize the writing conditions for every disc. The result is better interchangeability between CD-R discs and CD-R drives.

The identification method has 3 parts:

Disc IDentification Code (DID code)

Manufacturer code (M code)
The M code indicates the manufacturer of a disc. By reading this code, CD-R writers can identify the (supposed) manufacturer of an inserted disc.

Type code (T code)
The T code indicates a recording characteristic of a disc. By reading this code, CD-R writers can identify the recording characteristics of an inserted disc: T1 code and T2 code.

For details on the method and the actual codes: go to (members area)

Notes: A number of technology providers have allowed several manufacturers to use their DID. By doing so the technology providers have accepted responsibility for the recording characteristics of such discs.

To manufacture discs with a DID code, without permission of the holder of the DID code is misleading and may influence the reputation of the products of such companies.

What are Phase Change Recordings?
These are described in the attached document

What is a RID Code? What is a MID code?
As result of the discussions, between the consumer electronics manufacturers and the recording industry, measures are taken to respond to copyright and the piracy problems

The Recorder IDentification code (RID code) enables a trace for each disc back to the exact machine on which it was made using coded information in the recording itself. The use of the RID code is mandatory.Detailed information and the application form can be found in the following document

Does Philips provide Formatters for mastering systems?
Yes. For info go to our Mastering/Analyzers page

Information and contact

General Licensing information

This document explains our main principles for administering licensing programs related to CD, DVD and Blu-ray Disc. This document is for information purposes only.

For any other questions, please contact us

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