Document:

Filed by Automated Filing Services Inc. (604) 609-0244 - Imvision Therapeutics Inc. - Exhibit 10.3

EXHIBIT 10.3 

Employment Contract

Concluded between

ImVisioN GmbH, Feodor-Lynen-Straße 5, 30625 Hanover,

     - hereinafter referred to as the
Company -

and 

Prof. Dr. Horst Rose Am Vorwerk 7, 31303 Burgdorf 

- hereinafter referred to as the General Manager -

subject to the provisions of the Shareholders’ Resolution of
January 28, 2005, the following employment contract is concluded for the
position of General Manager.

Article 1 Responsibilities, business management,
representation 

	(1) 	
      The General Manager was appointed as General Manager of
      the Company by the resolution of the General Meeting of Shareholders of
      January 28, 2005, as of January 28, 2005. This contract becomes effective
      by such appointment.

	 	 
	(2) 	
      The General Manager shall perform operations in keeping
      with the legal regulations, with the provisions hereof and with the
      Memorandum of Association, exercising the due diligence specific of a
      businessman. To this effect, he is bound to observe the instructions
      issued by the General Meeting of Shareholders.

	 	 
	(3) 	
      Provided that the General Manager is the sole holder of
      this position, all issues regarding the Company are part of his remit. If
      several persons are appointed as General Managers, the competence of the
      General Manager is settled according to the tasks set by the General
      Meeting of Shareholders based on the task allocation plan.

	 	 
	(4) 	
      The content and volume of the representation right and of
      the signature right of the General Manager are settled by the relevant
      resolutions of the General Meeting of Shareholders, as well as by the
      Company’s Articles of Association.

	 	 
	(5) 	
      In relation to the General Manager, the Company is
      represented by a person appointed by the General Meeting of
      Shareholders.

Article 2 Approval of shareholders 

	(1) 	
      Separately from other provisions of the Memorandum of
      Association, the General Manager should secure the approval of the
      shareholders for the following operations:

	 	 	 
		a) 	
      appointment of attorneys and cancellation of powers of
      attorneys;

	 	 	 
		b) 	
      approval for conclusion or amendment of employment
      contracts, if they should provide for an annual gross salary of more than
      EURO 100,000.00, including current extra payments; agreements on profit
      sharing or turnover distribution;

	 	 	 
		c) 	
      procurement, alienation or encumbrance of land or real
      estate rights;

	 	 	 
		d) 	
      procurement and alienation of stakes and exercise of
      other rights of use thereon;

	 	 	 
		e) 	
      procurement or alienation of items of fixed assets, if
      the value of an individual business operation exceeds EURO
    100,000.00;

	 	 	 
		f) 	
      conclusion or amendment of long-term indebtedness
      relations, for instance management consulting or lease contracts, if the
      debts arising for the Company exceed the value of EURO 10,000.00 in a
      month or of EURO 100,000.00 in a year;

	 	 	 
		g) 	
      conclusion or amendment of contracts regarding current or
      future intellectual property rights or sales structures of the Company
      (for instance, license or Know-How agreements), and in case subsidiaries
      of the Company or of shareholders are concerned (group
    coordination);

	 	 	 
		h) 	
      set-up of guarantees, statements of guarantee or
      undertaking of debts or participation in debit or similar forms of
      liability, if the individual value thereof exceeds EURO
  100,000.00;

	 	 	 
		i) 	
      issuance and acceptance of bills of exchange, as well as
      taking out short-term loans, if they exceed a credit limit to be approved
      on a short term each year; taking out long-term loans, for instance
      mortgages and loans for car purchasing;

	 	 	 
		j) 	
      legal operations between the Company and - a shareholder
      or

		
      -
	
      the General Manager or

		
      -
	
      another company or another institution equally
      represented by the General Manager.

	 	 	 
	(2) 	
      The General Meeting of Shareholders may at any time
      change or add, by a resolution, operations requiring approval.
      Additionally, the approval of the General Meeting of Shareholders is
      required for all decisions exceeding the limits of current business
      operations.

Article 3 Reporting obligations, financial
plan

	(1) 	
      The General Manager shall promptly inform the General
      Meeting of Shareholders, completely and continuously, on the evolution of
      the business activity, on planning and individual operations of special
      interest.

	 	 	 
	(2) 	
      Provided that there are no special statutory provisions
      or instructions of the shareholders or if the task allocation plan or the
      job description fails to include provisions to the contrary, the following
      obligations shall be applicable:

	 	 	 
		a) 	
      The General Manager shall inform the General Meeting of
      Shareholders on the evolution of operations and the Company’s
    standing.

	 	 	 
		b) 	
      The General Manager shall submit to the General Meeting
      of Shareholders for approval purposes by November 30 of the relevant
      calendar year an annual financial plan for the next calendar
  year.

	 	 	 
	(3) 	
      If, for any reasons, the relevant resolutions of the
      General Meeting of Shareholders are not adopted, if they are adopted with
      delay or if there may be a danger in case of delay, the General Manager
      shall make a decision by applying the principles of a diligent
      businessman, for the benefit of the Company.

	 	 	 
	(4) 	
      If the Company were to further appoint an advisory board
      or a supervisory board, the reporting obligations shall be settled
      again.

Article 4 Confidentiality 

	(1) 	
      The General Manager shall be bound to observe the
      confidentiality obligation regarding all operations and activities of the
      Company, in particular regarding trade and operational secrets he may
      become aware of throughout and within his activity performed for the
      Company. This confidentiality obligation shall also apply to the content
      hereof and to all agreements regarding this contractual relationship, as
      well as to the cessation and termination causes thereof.

	 	 
	(2) 	
      Such obligation shall also apply after discharge from the
      management position and termination of this contract. Additionally, the
      General Manager undertakes in case of activity termination to return to
      the Company all documents related to his activity.

Article 5 Working hours and secondary
activities

	(1) 	
      The General Manager shall undertake to employ his entire
      working capacity for the benefit of the Company.

	 	 
	(2) 	
      Performance of secondary activities requires the prior
      written consent of the General Meeting of Shareholders. The same clause
      shall apply to the practice of public functions or of other functions
      requiring longstanding efforts.

Article 6 Wages 

	(1) 	
      The General Manager shall receive for its activity as of
      April 1, 2005 an annual gross salary of EURO 120,000.00, paid in 12
      non-cash gross monthly installments, amounting to EURO 10,000.00, by
      deducting all legal and other taxes that must be withheld or paid, with a
      due date for payment at month end. With respect to any activities
      performed by the General Manager before April 1, 2005, there is no right
      to payment of a fee or refund of costs from the Company. This provision
      shall not affect any existing rights against third parties.

	 	 
		
      The General Manager shall receive a special payment if
      one of the following events occurs:

	 	 
		
      The investors wish to alienate in full or in part the
      Company or shares of the Company during the Asset- Deal or Share-Deal
      procedure throughout the validity period of the employment contract
      concluded with the General Manager, therefore by March 31, 2008, or later
      on (“Exit“). For an Exit case, the General Manager shall receive a special
      payment to be calculated in keeping with the provisions in Appendix 1, by
      deducting the applicable wage tax. This amount is due within 10 bank days
      as of conclusion of the contracts underlying the Exit
  arrangement.

	 	 
	(2) 	
      The payments set forth under paragraph 1 cover the entire
      activity in keeping with the provisions of

		
      articles 1 and 2. If performance if additional activities
      exceeding the reasonable limits are unavoidable or in case special
      activities need to be performed, payment of special fees may be agreed
      upon.

	 	 
	(3) 	
      If the Company dismisses the General Manager and / or
      requests ordinary termination and / or releases the General Manager from
      the liability to perform its contractual obligations, the parties
      irrevocably give their consent to continuing to pay the wages agreed upon
      hereunder as per article 1 until expiry of the termination notice period.
      The obligation to continue to pay the wages shall not apply to the valid
      extraordinary termination of the contract requested by the
  Company.

	 	 
		
      Another fee of the General Manager shall be calculated on
      the payments to be further made.

Article 7 Payments in case of sickness, accident, decease

	(1) 	
      In case of a temporary inability of the General Manager
      to perform his activity following a sickness, a disability or other
      circumstances that are not attributable to him, the General Manager is
      entitled to benefit from the difference between the net wages and the
      payments made under the statutory and/ or private health insurance for a
      period of six months.

	 	 
	(2) 	
      In case of the General Manager’s decease throughout the
      employment contract, his dependants are entitled to benefit from the
      payment of his fixed salary, including bonuses and other benefits for the
      month of death, as well as for the two months following that when the
      death occurred. The dependants should reach an agreement on the percentage
      they are entitled to from the monthly salary of the General Manager. In
      case the Company is not notified of a decision adopted based on an
      agreement regarding the person that shall receive the maximum 2 monthly
      salaries for the benefit of all dependants, the Company is entitled to
      make such payments at the registration office of the competent court of
      law or to the consignment account of the lawyer or of the notary, such
      payment meaning that the obligation has been performed. Any rights arising
      under the pension insurance granted by the Company shall not apply for
      this period of time.

	 	 
	(4) 	
      For the General Manager, the Company shall underwrite an
      accident insurance within the regular limits, of a minimum value of EURO
      500,000.00 in case of disability and of EURO 250,000.00 in case of death
      caused by an accident. The person that shall benefit from the insured
      amounts in case of disability is the General Manager and in case of death,
      the person designated by the latter, and if there is no such provision or
      if the indicated person deceased, the General Manager’s successors. The
      insurance shall be no longer valid upon cessation hereof.

	 	 
	(5) 	
      Throughout the validity period of this contract, the
      Company shall grant to the General Manager a subsidy for the health
      insurance of a value equal to the employer’s contribution, as it would
      apply in case of the obligation of the General Manager to underwrite the
      health insurance, without exceeding however half of the value spent by the
      General Manager for his health insurance.

Article 8 Leave 

	(1) 	
      The General Manager shall benefit from an annual leave of
      30 business days that he shall use so as to preserve his working capacity.
      The year when the leave is granted is the calendar year.

	 	 
	(2) 	
      The period of the annual leave shall be set according to
      the business-specific needs, as well as, if applicable, in accordance with
      the other general managers. If on commercial grounds or for reasons
      related to him, by the year end the General Manager cannot use his leave
      in full or in part, the relevant leave days may be used by March 31 the
      next year.

	 	 
	(3) 	
      If the leave cannot be granted in full or in part
      following termination of the employment contract, the same shall be
      compensated to the General Manager, unless release is granted followed by
      the additional calculation of leave rights. The compensation agreement
      should be made in writing.

Article 9 Entertainment expenses, charges, company
car

	(1) 	
      For his business trips, the General Manager is entitled
      to request the refund of pro rata travel expenses, having to
      produce detailed supporting documents in this respect. If using public
      transportation, including trips by airplane or by sea, he is entitled to
      choose the Economy or Business class.

	 	 
		
      Separately from all of the above, the General Manager may
      entertain certain guests, at the Company’s expense, according to its
      specific remit.

	 	 
	(2) 	
      In case of business trips, the General Manager is
      entitled to also request the refund of the charges incurred by such trips.
      The charges are to be refunded by the Company only against detailed
      supporting documents.

Article 10 Pension insurance

	(1) 	
      In keeping with the provisions of an insurance contract,
      the Company shall undertake the payment of the

		
      direct insurance amounts for the pension insurance
      underwritten by the Company with an annual value of EURO
  2,400.00.

	 	 
	(2) 	
      The relevant details shall be settled by means of a
      separate contract.

Article 11 Activity for other companies and holding of
stakes in other companies 

Throughout the validity period of this contract, the General
Manager is forbidden to perform his activity independently, as an employee or
otherwise for another company, regardless whether there are direct competition
relations with such company. The General Meeting of Shareholders may decide in
each individual case whether to allow exceptions. Furthermore, throughout the
validity period of this contract, the General Manager is forbidden to set up,
buy out a business or secure stakes in a company. An exception is the current
acquisition of shares in companies listed with stock exchanges as personal
investments.

Article 12 Other provisions 

	(1) 	
      The inventions achieved by the General Manager throughout
      the validity period of the employment contract within its activity for the
      benefit of the Company are under the sole ownership of the Company. Any
      claims of the General Manager shall be set off by his salary. The
      regulations of the Law on Employees’ Inventions shall not apply in this
      case.

	 	 
	(2) 	
      The activity shall be based in Hanover.

	 	 
	(3) 	
      The activity shall begin on April 1,
  2005.

Article 13 Validity period of the contract, termination

	(1) 	
      Initially, the contract between the General Manager and
      the Company is concluded for a fixed period of three years, which means by
      March 31, 2008. Either of the parties may request ordinary termination of
      the contract, subject to a 6-month termination notice. The employment
      contract is extended with all its rights and obligations by an additional
      period of 12 months unless either of the parties requests termination
      subject to a 6-month notice, calculated after the expiry date of the
      validity period of this contract.

	 	 	 
	(2) 	
      The right to request extraordinary termination remains
      unaffected subject to the legal requirements (article 626 of the Civil
      Code). The category of material reasons includes in particular

	 	 	 
		-	
      the breach of the interdiction to perform additional
      activities and / or failure to observe the non- competition clause,
  

	 	-	serious breaches of the instructions issued by the General
      Meeting of Shareholders,
	 	-	preparation of an affidavit by the General Manager.
	 	 	 
	(3) 	
      In addition to termination, the employment contract
      ceases at the end of the month when the General Manager turns
65.

	 	 	 
	(4) 	
      Any form of termination must be made in writing. The
      competence for the receipt of the termination application drawn up by the
      General Manager falls upon another General Manager of the Company or, if
      there is no other person filling this position, upon the shareholder
      holding the highest share of equity.

	 	 	 
	(5) 	
      In case of termination of the work relationship or if the
      General Manager is discharged from his duties, at the request of the
      General Meeting of Shareholders, the General Manager should promptly
      return to the Company all goods that have been delivered to him in
      connection with his activity (keys, notebook, documents of any nature,
      files). A lien on such goods is excluded.

	 	 	 
	(6) 	
      In case of termination of the work relationship, the
      Company is entitled to request the General Manager to immediately cease
      his activity, while continuing to pay his wages. Throughout the validity
      period of the release, at the request of the Company, the General Manager
      shall perform all activities required for the transfer of his term of
      office.

Article 14 Final provisions 

	(1) 	
      All disputes arising out of and in connection with this
      contract shall be governed by the German law. The competent court of law
      for dispute settlement is based in Hanover.

	 	 
	(2) 	
      Any amendments or supplementations to this contract,
      which include the removal of the clause regarding the obligatory written
      format, should be made in writing and adopted by a resolution of the
      General Meeting of Shareholders.

	 	 
	(3) 	
      In case certain provisions of this contract are invalid,
      the validity of all other provisions shall not be affected. Replacing any
      invalid provision or filling any contractual gaps requires adopting such
      appropriate

provision as would have been stipulated
by the parties should they have known that such provision was valid or that
there was a contractual gap.

	Hannover, date 30.03.2005 	 	 	 Hannover, date 30.03.2006 

	 	 	 	 
	 	 	 	 
	 	 	 	 
	/s/ Wolfgang Trefzger	 /s/ Peter Schulz-Knappe	 	 
	   Vorstand                                    	    Vorstand	 	/s/
      Horst Rose  
	The Company 	 	 	General Manager 

Appendix 1 to the General Manager Employment Contract concluded
between ImVisioN GmbH and Dr. Martin Steiner on ______________

	1. 	
      In case of Exit, the General Manager shall receive a
      bonus of a value depending on the Company’s evolution in the period
      comprised between the conclusion of this contract and Exit. Exit includes
      any transaction whereby Nextech Venture LP alienates at least 80 % of the
      shares held in the Company, for which an adequate compensation shall be
      given. Exceptions are the alienations to the affiliates of Nextech Venture
      LP (article 15 AktG – Share Law) or to companies receiving consulting
      services from Nextech Venture AG, Zürich (hereinafter collectively
      referred to as “Nextech Venture“). In case of alienation to an
      aforementioned company, payment of the bonus is determined by the
      alienation of such company.

	 	 
	2. 	
      Payment of the bonus should confer upon the General
      Manager (prior to taxation) the position related to the case where (i) the
      Company would have held at the beginning of its activity a core capital
      amounting to EURO 550,000, (ii) with respect to such core capital, the
      General Manager would have held a share of 33 % = EURO 181,500 (iii) and
      the General Manager would alienate during the Exit operation his shares on
      the same terms as Nextech Venture. Any form of financing of the Company’s
      business by Nextech Venture (regardless whether this includes special
      loans or subsidies related to the equity capital reserves) shall be taken
      into account as a relevant increase in the core capital of the Company
      made by Nextech Venture and shall lead to a decrease in the stake of the
      General Manager.

	 	 
		
      Example: If upon Exit Nextech Venture provided a
      total amount of EURO 550,000 for the financing of the current business
      activity, the calculation base for the bonus shall be diminished,
      according to the total profit following Exit, by 1/2 to 16.5 %.

	 	 
	3. 	
      It is estimated that until Exit is performed other
      shareholders should receive stakes in the Company by means of capital
      increases by contributions in cash or in kind. In case of such forms of
      holdings (financing operation), the calculated shares due to the General
      Manager are diminished to the same extent as in the case of equity
      acquisition by Nextech Venture, also including the financing made by
      latter by that date.

	 	 
		
      Example: If on the effective date of the relevant
      capital increase, Nextech Venture had provided a total amount of EURO
      550,000 for the financing of the Company’s business, and the new investor,
      based on an assessment prior to the capital increase amounting to EURO
      2,200,000 had made a capital contribution of EURO 4,400,000 (core capital
      or reserve increases), holding thus a stake of 2/3 of the Company’s
      shares, the calculation base for the bonus according to the total income
      shall be diminished by 2/3, to 5.5 %.

	 	 
	4. 	
      If contracts stipulate making payments in advance for one
      or several financing operations performed prior to Exit (so-called
      liquidation preferences) from the profit related to the Exit operation for
      other shareholders apart from Nextech Venture LP or its legal successors,
      the right to bonus payment shall be decreased to the same degree as the
      share of Nextech Venture from the initial stake in the profit resulting
      from the Exit operation.

	 	 
		
      Example: If, based on the example under 3, the
      profit of the Exit operation had a total value of EURO 26.4 million, and
      the investor performing the financing operation were to own a right to an
      advance payment equal to the double of its initial investment (EURO 8.8
      million), the calculation base or the bonus shall be diminished according
      to the total income following the Exit operation by 1/3, to 3.67 %, in
      particular a value of EURO 968,000.

	 	 
	5. 	
      If the General Manager ceases his activity for the
      Company prior to Exit, he shall actually preserve the right to bonus
      payment. This shall be reduced, however, according to the termination date
      of the employment contract, as follows:

	 	Termination 0-6 months prior to Exit 	100 % 
	 	Termination 6-12 months prior to Exit 	75 % 
	 	Termination 12-24 months prior to Exit 	50 % 
	 	Termination 24-36 months prior to Exit 	25 % 
	 	Termination more than 36 months prior to
      Exit 	0 % 

In case of a termination agreement, the
parties shall adopt the adequate regulation by means of negotiations.

	6. 	
      If the compensation granted upon Exit is not paid in cash
      or if it is paid in cash only in part (for instance by granting shares of
      the acquirer) (“material compensation“), the General Manager shall
      actually receive the compensation in the same form as it shall be secured
      by Nextech Venture. The Company shall be however entitled, at its
      discretion, on the Exit date to decide whether to grant a compensation in
      cash, determined according to the actual value of the material
      compensation due to the General Manager on the Exit date. In case of
      disputes, the value of the compensation in kind is to be determined by a
      neutral auditor. The General Manager shall undertake any auxiliary
      obligations following receipt of the compensation in kind (for instance
      the holding obligation specific to the market conditions).

	 	 
	7. 	
      If the compensation granted upon Exit is not immediately
      paid or if it is paid in installments or according to the achievement of
      certain goals or upon occurrence of certain events, payment of the bonus
      shall be due to the same degree and on the same date as the payment to be
      made to Nextech Venture.

	 	 
	8. 	
      On the date when the structure of an Exit is determined,
      the parties shall inform each other on the applicable liquidation
      procedure, which shall put into practice the aforementioned principles,
      subject to the interests of the parties and of the
  shareholders.

	Hannover, date 30.03.2005 	 	 	Hannover, date 30.03.2006 
	  	 	 	 
	  	 	 	  
	 	 	 	 
	/s/ Wolfgang Trefzger 	/s/ Peter Schulz-Knappe 	 	 
	   Vorstand	   Vorstand	 	/s/
      Horst Rose  
	The Company 	 	 	General Manager 

	/s/ Felix Hofstetter 	/s/ Alfred Scheidegger 	 
	Managing
      Partner 	 
         Founding Partner and CEO 	 
	Nextech Venture AGFiled by Automated Filing Services Inc. (604) 609-0244 - Imvision Therapeutics Inc. - Exhibit 10.4

[NOTE TO READER: CERTAIN PORTIONS OF THIS AGREEMENT RELATING
TO ROYALTY INFORMATION HAVE BEEN REMOVED AND ARE THE SUBJECT OF A REQUEST FOR
CONFIDENTIAL TREATMENT SUBMITTED BY THE COMPANY TO THE SECURITIES EXCHANGE
COMMISSION (THE "COMMISSION") PURSUANT TO RULE 406 OF THE SECURITIES ACT OF
1933. THE PRICING INFORMATION HAS BEEN DISCLOSED TO THE COMMISSION IN CONNECTION
WITH THE REQUEST FOR CONFIDENTIAL TREATMENT.] 

EXHIBIT 10.4

Translation from German into English

Patent and Know-how Purchasing Agreement

between BioVision AG, Feodor-Lynen Straße 5, D-30625 Hanover,
Germany

- as Seller -

and ImVisioN GmbH, Feodor-Lynen Straße 5, D-30625 Hanover,
Germany 

- as Buyer -

Recitals

The Seller is hereby granted all rights of registration of
patent WO 2004/035793 entitled “Modular antigen transporter molecules for
modulating immune reactions, associated constructs, methods and uses thereof”,
as well as of patent EP 1 400 114 A entitled “Modular antigen transporter
molecules (MAT molecules) for modulating immune reactions, associated
constructs, methods and uses thereof”.

The Buyer is a biotechnology company, dealing with the
development of immunization therapies in treating allergic diseases.

The parties intend to transfer the patent rights and in this
respect they agree upon the following.

§
1          Scope of
Agreement

1.            
The Seller represents that it is the sole owner of the rights over patent EP 1
408 114 of 11/10/2002 and patent WO 2004/035793 of 09/10/2003 (see
Appendix).

2.            
The scope of this Agreement is the transfer of all industrial or intellectual
property rights devolving upon the Seller and assigned to the Buyer hereunder,
arising from the aforementioned registration of patent or parts thereof,
including all rights arising from the registration of patent as well as from the
patents granted for all designated contractual states (hereinafter “contractual
rights”). The contractual rights include in particular all rights entitling the
Buyer to use and exploit in any way the registered invention.

§ 2            
  Transfer of contractual rights

1

1.            
The Seller hereby transfers the contractual rights to the Buyer, effective as of
31/01/2005. The parties agree that all rights over contractual rights, including
over the national patents granted in each of the contractual states specified
hereinafter, shall devolve upon the Buyer.

2.            
Immediately after the signing of this Agreement, the Seller shall take all
necessary formal steps for the transfer of the contractual rights to the Buyer
and registration thereof, including giving its consent to such registration, and
shall deliver the registration approvals as required.

§ 3         
Transfer of know-how

1.            
The Seller shall supply all confidential and non-confidential technical and
non-technical knowledge regarding the contractual rights, consisting of
all data, information and material, including all original documents required
for obtaining and using the contractual rights, in particular the patent deeds
and accompanying documents. Confidential know-how (“confidential know-how”)
refers to the patent deeds and accompanying documents, as well as to the
research included in Scientific Rationale (appendix to Businessplan Imvision
GmbH, see Appendix 2), paragraphs 6 and 7. The Seller shall transfer the
confidential know-how to the Buyer, and the latter is entitled to fully use and
exploit it.

2.            
The Seller shall fill in the written documents the written and oral data as the
Buyer deems necessary to make use of the contractual rights.

3.            
The Seller represents as of now that, to this date, the documents, data,
information and material provided by the latter comprise and render in entirety
the scope of the Agreement for the intended use.

§
4          The Seller’s
indemnity

1.            
The parties agree on the following legal properties of the contractual
scope:
- the contractual rights consist of the volume specified herein. There
is no pending dispute or risk of dispute over the protection right; 
- the
Buyer is aware of the current status of the audit procedure, based on the
documents provided by the Seller; 
- the Buyer knows the documents listed in
Appendix 2. Apart from the same, the Seller knows no other written statements
from offices of inventions, patent auditors, attorneys in the field and
commercial offices specialized in patent research, that might affect the
registration of the protection right; 
- the data in the registration of the
protection right were supplied on the date of registration of the protection
right on an accurate and complete basis, knowingly and in good faith; 
- the
previous rights of use of third parties, included in the scope of contractual
rights, are not known to the Seller to the best of its knowledge. No third party
was involved in patent development apart from the inventors specified in the
patent deeds; 
- the knowledge of third parties not publicly known was not
used.

2.            
Apart from the warranties under paragraph 1, the Seller makes no other
indemnity.

3.            
To obtain the contractual rights, the Seller is liable under the law.

§ 5         
Purchasing price

The Buyer acquires the contractual rights and the related
know-how for the price of 1.00 EURO plus the statutory VAT.

Furthermore, the Buyer shall pay to the Seller a sales tax:

2

a)            
on the net sales of products that the Buyer markets directly. These shall be
calculated based on the net selling prices obtained by the Buyer from the sale
of products in the countries holding the patent, or where the patent has been
registered and not yet finally rejected, and where the product might impair the
patent. The net selling price is the selling price for third parties, minus the
discount and additional costs invoiced separately, such as for transport,
packaging, customs duties or other taxes. Any transfer of products to companies
within the Group (e.g. the parent company, subsidiaries, affiliates) is not
deemed as a sale of products. In such case, net sales of products shall be
calculated based on the net selling prices, obtained by the Group Company by the
sale of products to an end consumer.

The following percentage is applicable: [***]% of the
net sale, as per above.

b)            
on revenues obtained by the Buyer from the lending, sale or other use of the
patent.

The following percentage is applicable: [***]% of all
payments received by the Buyer from the aforementioned transactions (including
without limitation: percentages, milestone payments, payments for drawings).

[***OMITTED AND FILED SEPARATELY WITH THE COMMISSION
FURTHER TO A REQUEST FOR CONFIDENTIAL TREATMENT PURSUANT TO RULE 406 OF THE
SECURITIES ACT OF 1933]

§
6           Application of
patent rights, obligation of non-challenge

1.            
The Buyer, at its discretion, shall decide on the application of patent rights.
The latter shall bear all costs related thereto.

2.            
The Seller undertakes as much as necessary to support the Buyer, at the latter’s
request, in the application of the patent rights. The expenses thus incurred for
the Seller shall be covered by the Buyer, as they previously agreed thereupon.
Any possible claims to damages or possible receipts obtained with a view to a
deed of arrangement shall devolve upon the Buyer.

3.            
The Seller undertakes not to personally challenge or help third parties to
challenge the patent rights.

§ 7         
Confidentiality

1.            
The contracting parties mutually undertake to keep the confidentiality of all
information received from the contractual partner in connection with this
Agreement, and of the knowledge acquired from the contractual partner relating
to bases, modus operandi, construction, developments, improvements and
other details regarding the contractual rights and Agreement performance, even
when such information or knowledge has not been expressly declared secret or
confidential. Furthermore, the contracting parties undertake to keep the
confidentiality of the contents hereof. Moreover, the Seller undertakes to keep
the confidentiality of the know-how to be transferred as per §3, that paragraph
(b) below has no effect upon. Such obligations of confidentiality shall extend
for 10 years as of the expiry of this Agreement.

Exceptions to the obligation of confidentiality include:

(a)            
information that on the date of disclosure is freely accessible or that,
following disclosure, becomes freely accessible through no fault of the
receiving party;

(b)            
information that the receiving party can prove that, on the date of disclosure
under this Agreement, it was already aware of;

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(c)            
information that the receiving party can prove it obtained legally from a third
party and that such third party disclosed, to the best knowledge of the
receiving party, without breach of any obligation of confidentiality to the
other contracting party;

(d)            
information that the receiving party can prove by written supporting documents
it obtained on its own and independently of the confidential information
disclosed hereunder.

2.            
The contracting parties are entitled to inform the media on the execution of
this Agreement. Prior to the publication of a press release, the same shall be
submitted to the other contractual partner for approval purposes; such approval
cannot be unreasonably withheld.

3.            
This obligation of confidentiality shall also govern the employees of the
contracting parties, to the extent they deal with the contractual rights. The
Seller is bound to take all necessary measures to ensure confidentiality is
being kept, to prevent and impede the unlawful disclosure of trading secrets
through its employees or other persons. This obligation of confidentiality for
employees should also govern the latter for the period subsequent to termination
of their respective employment contracts. The obligation should be imposed in
writing and submitted to the Buyer, upon request.

4.            
If either of the contracting parties finds that confidential documents or
trading secrets have been disclosed by third parties or associates of the Seller
or of the Buyer, or that the obligation of confidentiality has been breached by
other third parties with respect to documents, such party shall inform the other
party thereon.

5.            
For any case of default, the Buyer and the Seller shall be subject to a
contractual penalty in favor of the other party amounting to EURO 50,000.- in
particular cases. Regardless thereof, the Seller or the Buyer can additionally
claim from the other party indemnities for any damage inflicted based on
evidence. The contractual penalty shall be calculated according to the extent of
the damage.

6.            
Notwithstanding all of the above, the contracting parties may disclose the
contents hereof to their specialized advisors, as long as they are subject to
the obligation of confidentiality, to their Supervisory Boards, investors and
potential investors.

§ 8         
Other clauses

1.            
Setoff, assignment, waiver
The Buyer can set off with setoff receivables,
only if the latter are acknowledged or legally ascertained by the Seller.

The Buyer is entitled to assign to third parties its rights and
obligations hereunder, subject to the Seller’s approval. The Seller shall not
unreasonably withhold its approval.

If either of the contracting parties fails to exercise any of
its rights hereunder, this shall not mean a waiver to such right.

2.            
Applicable law, place of performance

This Agreement is governed by the German Law.

The place of performance and the court venue for all
obligations hereunder is the Buyer’s registered office.

3.            
Contractual documents, contents, notices

a)            
The contractual scope hereof is finally set out under this Agreement, along with
its appendices and references. Appendices are integral part hereof. Apart from
them, there are no other agreements between the parties. Any possible prior
agreements shall have no scope.

b)            
Headings are for layout purposes only and shall not permanently determine the
contents of their respective texts.

4

c)            
Any addenda, additions and amendments to this Agreement should be made in
writing, unless other legal formal requirements apply. This also applies to the
cancellation of this written format clause.

g)            
Any notices to either contracting party should be sent to the following
addresses. Amendments shall be considered, only if notified in writing to the
declaring contracting party, or if the latter makes use of the changed address
of the recipient.

	Seller: 	Wolfgang Tretzger 
	  	BioVisioN AG 
	  	Feodor-Lynen Straße 5 
	  	D-30625 Hanover 
	  	Germany 
	  	  
	Buyer: 	Dr. Martin Steiner 
	  	General Manager 
	  	ImVisioN GmbH 
	  	Feodor-Lynen Straße 5 
	  	D-30625 Hanover 
	  	Germany 

4.            
Costs, taxes

a)            
The costs for the execution and legal enforcement of this document shall be
borne by the Buyer.

b)            
Consulting costs related to the conclusion or performance hereof shall be
covered by each party for itself. If, at the request of either of the
contracting parties, consulting or other services are provided by third parties,
such contracting party shall pay the relevant fees to the third parties.

c)            
The contracting parties indemnify each other that the execution of this
Agreement does not entail intermediation fees, commissions or other payment
claims from third parties, which should be borne by the possibly requesting
contracting party.

5.            
Partial nullity, regulatory gaps, construction

a)            
When any present or future clauses of this Agreement become legally invalid in
full or in part, or are unenforceable, or further lose their legal validity or
enforceability, the validity of all other clauses hereof shall not be affected.
This is also applicable if this Agreement is found to have gaps.

b)            
The invalid or unenforceable clause should be replaced by or the gap should be
filled with an appropriate valid clause the parties would have agreed upon, if
upon conclusion hereof they had paid heed thereto. This is also applicable when
the invalidity of one clause is due to the service volume or time (deadline,
interval) set forth hereunder; in such cases, a service volume or time
(deadline, interval) shall apply instead of the agreement, as are legally
allowed, as closest as possible to the will of the parties.

c)            
If the validity of one clause as described above can be ensured only by
agreement, in compliance with certain special formal conditions, the parties are
bound to perform the necessary operations and make the relevant statements.

	Hanover, 30.03.2005 	  	  
	Seller................ 	/s/ Wolfgang Trefzger 	/s/ Peter Schulz-Knappe 
	  	Vorstand 	Vorstand 
	  	  	  
	Düsseldorf, 31.03.2005 	  	  
	Buyer............. 	/s/ Horst Rose 	/s/ Martin Steiner 
	  	Geschäftsführer/COO 	Geschäftsführer/CEO

5

Appendix 1: Patent Registration

	Appendix 2 includes: 	Investigation reports and audit resolutions
      from EPA/WIPO 
		Comments from Kröncke (on investigations and
      resolutions, on possibly necessari licenses) 
		Comments from Läufer (on patentability, drawn
      up before Patent Submission) 
	  	Investigations by Sopheon (on novelty, drawn up
      before Patent Submission) 
	  	Comments from Schnappauf 
	  	Businessplan ImVisioN 

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