The range of jurisdictions where CDT's patent portfolio exists includes the USA and European and Far East countries. CDT's patents and patent applications in the USA are set out below

Granted US Patents in the name of Cambridge Display Technology

Patent number	Title	Owner
US4923288	Optical Modulators based on Polymers	CDT Ltd
US5247190	Electroluminescent devices	CDT Ltd
US5399502	Method of manufacturing of electroluminescent devices	CDT Ltd
US5401827	Semiconductive copolymers for use in luminescent devices	CDT Ltd
US5512654	Semiconductive copolymers for use in luminescent devices	CDT Ltd
US5672678	Semiconductive copolymers for use in luminescent devices	CDT Ltd
US5328809	Patterning of semiconductive polymers	CDT Ltd
US5425125	Optical device incorporating semiconductive conjugated polymer	CDT Ltd
US5747182	Electroluminescent devices and manufacture thereof	CDT Ltd
US5807627	Electroluminescent devices	CDT Ltd
US5514878	Polymers for Electroluminescent Devices	CDT Ltd
US5821690	Electroluminescent devices having a light-emitting layer	CDT Ltd
US5523555	Photodetector device having a semiconductive conjugated polymer	CDT Ltd
US5698048	Photoresponsive materials	CDT Ltd
US5965979	Manufacture of organic light emitting device	CDT Ltd
US5929562	Organic light emitting devices	CDT Ltd
US6188175	Electroluminescent device	CDT Ltd
US6111560	A display with a light modulator and a kight source	CDT Ltd
US6723811	Polymers for use in optical devices	CDT Ltd
US6559256	Polymers for use in optical devices	CDT Ltd
US7105621	Polymers for use in optical devices	CDT Ltd
US6919415	Polymers for use in optical devices	CDT Ltd
US6211613	High contrast electroluminescent displays	CDT Ltd
US6541790	Organic light emitting device and method of fabricating the same	CDT Ltd
US6881598	Organic light emitting device and method of fabricating the same	CDT Ltd
US6395328	Organic light emitting diode colour display	CDT Ltd
US6605823	Electroluminescent devices with electrode protection	CDT Ltd
US7151341	Electroluminescent devices with electrode protection	CDT Ltd
US6402579	Electrode deposition for organic light emitting devices	CDT Ltd
US6488555	Electrode deposition for organic light emitting devices	CDT Ltd
US6255774	Multilayer cathode for organic light emitting device	CDT Ltd
US6423428	Conjugated copolymers for use in luminescent devices	CDT Ltd
US6002206	Organic EL devices and operation thereof	CDT Ltd
US6153711	Rheology modification of precursor solutions	CDT Ltd
US6861799	Colour filters for organic light emissive devices	CDT Ltd
US6580212	Display device with improved contrast	CDT Ltd
US6384528	Electroluminescent devices	CDT Ltd
US6416885	Electroluminescent devices	CDT Ltd
US6551727	Electroluminescent devices	CDT Ltd
US7049010	Polymer materials for electroluminescent devices	CDT Ltd
US6559593	Sputter deposition	CDT Ltd
US5965901	Electroluminescent devices with voltage drive scheme	CDT Ltd
US5969475	Tuneable microcavities	CDT Ltd
US6429601	Electroluminescent devices	Joint CDT Ltd/ Seiko Epson Corporate
US6498049	Display devices	Joint CDT Ltd/ Seiko Epson Corporate
US6518700	Organic light emitting devices	Joint CDT Ltd/ Seiko Epson Corporate
US6558219	Method of making electroluminescent devices having varying electrical and/or optical properties	CDT Ltd
US6897473	Electroluminescent devices	CDT Ltd
US7078251	Electroluminescent devices	CDT Ltd
US7727180	Electroluminescent devices	CDT Ltd
US6340732	Conjugated polymers	CDT Ltd
US6340789	Multilayer photovoltaic or photoconductive devices	CDT Ltd
US6592969	Flexible substrate for organic devices	CDT Ltd
US6994906	Flexible substrate for organic devices	CDT Ltd
US7116308	Backlit displays	CDT Ltd
US6635990	Display device with primary and secondary light emissive regions	CDT Ltd
US6777706	Optical devices	CDT Ltd
US6850003	Self-assembled transport layers for OLEDs	CDT Ltd
US6403803	Compounds for electronic devices	CDT Ltd
US6626566	Compounds for electronic devices	CDT Ltd
US6693611	Display devices	CDT Ltd
US7005196	Organic light emitting devices	CDT Ltd
US6576093	Method of producing organic light emitting devices	CDT Ltd
US6960877	Organic light emitting devices	CDT Ltd
US6887973	Electro-luminiscent polymers, their preparation and uses	CDT Ltd
US6763350	Opto-electrical devices	CDT Ltd
US6707248	Opto-electrical devices	CDT Ltd
US6992438	Opto-electrical devices	CDT Ltd
US7071612	Opto-electrical devices	CDT Ltd
US6512082	Polymers, their preparation and uses	CDT Ltd
US6353072	Polymer preparation from boron derivative functional group-containing monomers	CDT Ltd
US6878297	Method of producing organic light emissive devices	CDT Ltd
US6791261	Multiple wavelength light emitting device, electronic apparatus, and interference mirror	Joint CDT Ltd/ Seiko Epson Corporation
US6809472	Light emitting devices	CDT Ltd
US6762234	A formulation for depositing a light emitting polymer layer	Joint CDT Ltd/ Seiko Epson
US7005484	Polymerisation method	CDT Ltd
US6835803	Method for doping a polymer	CDT Ltd
US7008999	Method for doping a polymer	CDT Ltd
US6800498	Method of producing an organic light emissive device	CDT Ltd
US6891325	Method of producing an organic light emissive device	CDT Ltd
US6828724	Light emitting devices	CDT Ltd
US6858324	Copolymer	CDT Ltd
US6801000	Light emissive devices	CDT Ltd
US6998181	Polymer and uses thereof	CDT Ltd
US7091516	Optoelectronic devices	CDT Ltd
US6639250	Multiple wavelength light emitting device and electronic apparatus	Joint CDT Ltd/ Seiko Epson Corporation
US7125952	(partially) Conjugated polymer, process for its preparation and use in electroluminescent devices	CDT Ltd
US6949291	Twisted polymers, uses thereof and processes for the preparation of statistical copolymers	CDT Ltd
US7023012	Formulation for depositing a conjugated polymer layer	CDT Ltd
US6878312	Composition, film manufacturing method, as well as functional device and manufacturing method therefor	Joint CDT Ltd/ Seiko Epson Corporation
US7173103	Modified suzuki method for polymerisation of aromatic monomers	CDT Ltd
US7074884	Conjugated polymer preparation via suzuki coupling in emulsion	CDT Ltd
US7141818	Electroluminescent device	CDT Ltd
US6670213	Method preparing photoresponsive devices, and devices made thereby	CDT Ltd
US6872970	Photoresponsive devices	CDT Ltd
US7239309	Display drivers for electro-optic displays	CDT Ltd
US6117567	Colour source and method for its fabrication	CDT Ltd
US7012378	Programmable current source and methods of use	CDT Ltd

Pending International patent applications in the name of Cambridge Display Technology

Application number	Title	Priority date
WO2000/35028	Display devices	CDT Ltd
WO2003/000773	Polymer Containing substituted triphenylamine units	CDT Ltd
WO2001/49768	Luminescent polymer	CDT Ltd
WO2001/62869	Luminescent polymer	CDT Ltd
WO2002/28983	Light Emissive polymer blends and light emissive devices made from the same	CDT Ltd
WO2002/069119	Formulation and method for depositing a material on a substrate	CDT Ltd
WO2002/092724	Substituted fluorene polymers, their preparation and use in optical devices	CDT Ltd
WO2002/092723	Substituted fluorene polymers, their preparation and use in optical devices	CDT Ltd
WO2002/083760	Polymer, its preparation and uses	CDT Ltd
WO2003/012892	Electroluminescent polymers	CDT Ltd
WO2004/057674	Electrical connection of optoelectronic devices	CDT Ltd
WO2002/059121	Monomer for use in preparation of a polymer to be used in optical devices	CDT Ltd
WO2003/021340	Optoelectronic displays	CDT Ltd
WO2003/035714	Triarylamine containing monomers for optoelectronic devices	CDT Ltd
WO2003/091983	Blank lines	CDT Ltd
WO2003/094140	Electroluminescent display and driver circuit to reduce photoluminesence	CDT Ltd
WO2005/006458	Test structures and methods	CDT Ltd
WO2003/083960	Method of preparation of organic optoelectronic and electronic devices and devices thereby obtained	CDT Ltd
WO2003/038798	Display driver circuits for electro-optic displays	CDT Ltd
WO2003/107313	Display driver circuits	CDT Ltd
WO2004/006350	Combined information display and information input device	CDT Ltd
WO2003/092072	Display devices	CDT Ltd
WO2004/023573	Optical device	Joint CDT Ltd/ General Electric
WO2003/079322	Display driver circuits	CDT Ltd
WO2004/070845	Organic optoelectronic device	CDT Ltd
WO2004/006291	Patterning method	CDT Ltd
WO2005/071771	Organic light emitting diode	CDT Ltd
WO2004/034749	Optical device	CDT Ltd
WO2003/107318	Generators	CDT Ltd
WO2006/013373	Anti-reflective layer	CDT Ltd
WO2004/041902	Polymer	CDT Ltd
WO2004/097785	PWM driver for a passive matrix display and corresponding method	CDT Ltd
WO2006/016153	Light emissive device	CDT Ltd
WO2004/084326	Method for the production of metal complexes	CDT Oxford
WO2003/095586	Polymers their preparation and uses	CDT Ltd
WO0007235	Patterned organic light emitting device	CDT Oxford
WO02093662	On a surface	CDT Oxford
WO2003/044877	Light emitting device and compounds for the therein	CDT Oxford
WO2003/074628	Phosphorescent compositions and organic light emitting devices containing them	CDT Oxford
WO2003/076548	Polymerisable compositions and organic light emitting devices containing them	CDT Oxford
WO2005/117161	Metal Complex	CDT Oxford
WO2005/013386	Electroluminescent device	Joint CDT Ltd/ CDT Oxford
WO2004/084260	Electroluminescent device	CDT Ltd
WO2004/083277	Polymers, their preparation and uses	CDT Ltd
WO2004/100282	Manufacture of a polymer device	Joint CDT Ltd/ Cambridge University
WO2005/036665	Irradyating it with light	CDT Ltd
WO2005/053052	Optical device	CDT Ltd
WO2006/018634	Enhanced emission of light from organic light emitting diodes	CDT Ltd
WO2005/074327	Display device	CDT Ltd
WO2005/086252	Organic light emitting diode comprising microlens	CDT Ltd
WO2006/040548	Organicd transistor	CDT Ltd
WO2005/076386	Molecular electronic device fabrication methods and structures	CDT Ltd
WO2005/047363	Dibenzosilol polymers, their preparation and uses	Joiny CDT Ltd/ Cambridge University
WO2005/059951	Optical device	CDT Ltd
WO2005/117160	Light emitting device	CDT Oxford
WO2006/040387	Monomer for making a crosslinked polymer	Joint CDT Ltd/ CDT Oxford
WO2006/067508	Light emissive device	Joint CDT Ltd/ CDT Oxford
WO2006/038020	Light emitting device	CDT Ltd
WO2006/040530	Manufacture of an organic device	Joint CDT Ltd/ CDT Oxford
WO2005/117159	Light emitting device comprising metal complexes with biphosphinne ligandas	CDT Oxford
WO2006/010911	Laminated interconnects for organic opto-electronic device modules	CDT Ltd
WO2006/064183	Method of preparing opto-electronic device	CDT Ltd
WO2006/067483	Process for the synthesis of aryfluorenes and analogues thereof	CDT Oxford
WO2006/070185	Rigid Amines	Joint CDT Ltd/ CDT Oxford
WO2006/070186	Conductive polymer compositions in opto-electrical devices	Joint CDT Ltd/ CDT Oxford
WO2006/067497	Optical devices and their manufacture	CDT Ltd
WO2006/067368	Organic electroluminescent device	CDT Ltd
WO2006/064194	Phosphorescent OLED	Joint CDT Ltd/ CDT Oxford
WO2006/100444	Luminescent device	CDT Ltd
WO2006/071106	Cathode separator rings	Joint CDT Ltd/ OTB
WO2006/070184	Blue-shifted triarylamine polymer	Joint CDT Ltd/ CDT Oxford
WO2006/035246	Multi-line addressing methods and apparatus	CDT Ltd
WO2006/035247	Multi-line addressing methods and apparatus	CDT Ltd
WO2006/123126	Top emitting electroluminescent devices comprising cathode bus bars	CDT Ltd
WO2006/087558	Apparatus and method for the application of material layer to dispay devices	Joint CDT Ltd/ Applied Multilayers
WO2006/097711	Light emissive device	Joint CDT Ltd/ University of Sheffield
WO2006/125988	Electroluminescent device	CDT Ltd
WO2007/031704	Active matrix display drive control systems	CDT Ltd
WO2006/109083	Pulsed driven displays	Joint CDT Ltd/ CDT Oxford
WO2006/067520	Digital signal processing methods and apparatus	CDT Ltd
WO2007/023251	Display driving methods and apparatus	CDT Ltd
WO2007/031773	Organic light emitting device (Rhenium Tridentate)	Joint Sumitomo/ Oxford
WO2007/071957	Electronic device (Diamine unti with backbone & pendant amine groups)	Joint CDT Ltd/ CDT Oxford
WO2007/023272	Edge/Pixel Edge Spacer Structure	CDT Ltd
WO2007/071974	Arylamine polymer (Meta-linked triarylamines)	Joint CDT Ltd/ CDT Oxford
WO2007/07117	In opto-electrical devices	Joint CDT Ltd/ CDT Oxford
WO2006/123167	Ink jet printing compositions in opto-electrical devices	CDT Ltd
WO2007/071969	Light emissive device (white devices)	CDT Oxford
WO2007/042774	Display monitoring systems	CDT Ltd
WO2007/066079	Converting cavity glass from frosted to transparent	CDT Ltd
WO2007/071938	Passive matrix display drivers (Ratio analogue column curent driver)	CDT Ltd
WO2007/074325	Organice electroluminescent device (Optimized Optical Cavity)	CDT Oxford